Do&#231;. Dr. Osman Tun&#231;

Fixed Point Theory , cilt.27, sa.1, ss.437-454, 2026 (SCI-Expanded, Scopus)

2. Ulam-type stability of ψ− Hilfer fractional-order integro-differential equations with multiple variable delays

Asian Journal of Control , cilt.28, sa.1, ss.34-45, 2026 (SCI-Expanded, Scopus)

3. Ulam-Type Stability Results for Fractional Integro-Delay Differential and Integral Equations via the ψ-Hilfer Operator

Fractal and Fractional , cilt.10, sa.1, 2026 (SCI-Expanded, Scopus)

4. On the Ulam-type stability of higher-order iterative Volterra integro-delay differential equations

Pinelas S., Tunç C., Tunç O., Oğuz M. Ş.

AIMS Mathematics , cilt.11, sa.1, ss.1219-1238, 2026 (SCI-Expanded, Scopus)

5. Exponential stabilization for differential and integro-differential equations of second order with multiple retardations

Domoshnitsky A., Tunç C., Tunç O., YAO J.

Mathematica Slovaca , 2026 (SCI-Expanded, Scopus)

6. Novel Soliton structures for the fractional Shynaray-IIA equation using two robust techniques: Phase plane analysis

Rehman A. U., Riaz M. B., Tunç O.

Journal of Engineering Research (Kuwait) , 2026 (SCI-Expanded, Scopus)

7. ENHANCED IMPULSIVE STABILIZATION RESULTS OF DIFFERENTIAL AND INTEGRO-DIFFERENTIAL EQUATIONS OF SECOND ORDER

Tunç O., Berezansky L., Tunç C., Yao J.

Discrete and Continuous Dynamical Systems - Series B , cilt.31, ss.255-276, 2026 (SCI-Expanded, Scopus)

8. A NOVEL APPROACH ON THE EXISTENCE OF PERIODIC SOLUTIONS FOR A NON-LINEAR DIFFERENTIAL EQUATION OF FOURTH ORDER

JOURNAL OF NONLINEAR AND CONVEX ANALYSIS , cilt.27, sa.1, ss.41-54, 2026 (SCI-Expanded, Scopus)

9. Analysis of the integro-differential Jaulent–Miodek evolution equation by nonlinear self-adjointness and Lie theory

Junaid-U-Rehman M., Riaz M. B., Tunç O., Martinovic J.

Boundary Value Problems , cilt.2025, sa.1, 2025 (SCI-Expanded)

10. Mathematical modeling of tumor-immune dynamics: stability, control, and synchronization via fractional calculus and numerical optimization

Aderyani S. R., Saadati R., Aderyani F. R., Tunç O.

Scientific Reports , cilt.15, sa.1, 2025 (SCI-Expanded, Scopus)

11. Existence and Stabilization for Impulsive Integro-Differential Equations of Second-Order With Multiple Kernels and Delays

Pinelas S., Tunç O., Tunç C.

Mathematical Methods in the Applied Sciences , cilt.48, sa.17, ss.15682-15694, 2025 (SCI-Expanded, Scopus)

12. Analytical optical soliton solution & stability analysis of the dimensionless time-dependent paraxial equation

Abdullah A., Rahman G. u., Tunç O.

Indian Journal of Physics , cilt.99, sa.11, ss.4181-4195, 2025 (SCI-Expanded, Scopus)

13. Ulam–Hyers–Rassias Stability of ψ-Hilfer Volterra Integro-Differential Equations of Fractional Order Containing Multiple Variable Delays

Graef J. R., Tunç O., Tunç C.

Fractal and Fractional , cilt.9, sa.5, 2025 (SCI-Expanded, Scopus)

14. On global stability of nonlinear systems with unbounded and distributed delays and a dominating non-delay term

Braverman E., Tunç C., Tunç O.

Communications in Nonlinear Science and Numerical Simulation , cilt.143, 2025 (SCI-Expanded, Scopus)

15. On Ulam–Hyers–Mittag-Leffler Stability of Fractional Integral Equations Containing Multiple Variable Delays

Mathematics , cilt.13, sa.4, 2025 (SCI-Expanded, Scopus)

16. On the Ulam-type stability of impulsive differential equations with multiple time delays

Arab Journal of Basic and Applied Sciences , cilt.32, sa.1, ss.490-504, 2025 (Scopus)

17. Existence of Solutions and Ulam Stability Analysis of Implicit (p, q)-Fractional Difference Equations

Mesmouli M. B., Iambor L. F., Tunç O., Hassan T. S.

Contemporary Mathematics (Singapore) , cilt.6, sa.6, ss.7619-7635, 2025 (ESCI, Scopus)

18. On unique solutions of integral equations by progressive contractions

Graef J. R., Tunç O., Tunç C.

Computational Methods for Differential Equations , cilt.13, sa.1, ss.183-189, 2025 (ESCI, Scopus)

19. A coupled nonlinear system of integro-differential equations using modified abc operator

Khan H., Alzabut J., Almutairi D., Alqurashi W. K., Pinelas S., Tunç O., et al.

Fractals , cilt.33, sa.6, 2025 (SCI-Expanded, Scopus)

20. Qualitative analysis for a system of generalized Caputo proportional fractional integro-differential equations with multiple time delays

Tunç C., Mansız K., Tunç O.

Arab Journal of Basic and Applied Sciences , cilt.32, sa.1, ss.247-261, 2025 (Scopus)

21. Signature of conservation laws and solitary wave solution with different dynamics in Thomas–Fermi plasma: Lie theory

Fayyaz M., Riaz M. B., Rehman M. J. U., Tunç O.

Partial Differential Equations in Applied Mathematics , cilt.12, 2024 (Scopus)

22. On the Fixed Point Theorem for Large Contraction Mappings with Applications to Delay Fractional Differential Equations

Mesmouli M. B., Akın E., Iambor L. F., Tunç O., Hassan T. S.

Fractal and Fractional , cilt.8, sa.12, 2024 (SCI-Expanded, Scopus)

23. Analytical study of fractional DNA dynamics in the Peyrard-Bishop oscillator-chain model

Riaz M. B., Fayyaz M., Rahman R. U., Martinovic J., Tunç O.

Ain Shams Engineering Journal , cilt.15, sa.8, 2024 (SCI-Expanded, Scopus)

24. Exponential stability in the Lp-norm of nonlinear coupled hyperbolic spatially inhomogeneous systems

Slynko V., Tunç O., Atamas I.

Applied Mathematics and Computation , cilt.472, 2024 (SCI-Expanded, Scopus)

25. On Ulam stabilities of iterative Fredholm and Volterra integral equations with multiple time-varying delays

Revista de la Real Academia de Ciencias Exactas, Fisicas y Naturales - Serie A: Matematicas , cilt.118, sa.3, 2024 (SCI-Expanded, Scopus)

26. Thermal and Flow Properties of Jeffrey Fluid Through Prabhakar Fractional Approach: Investigating Heat and Mass Transfer with Emphasis on Special Functions

Riaz M. B., Rehman A. U., Chan C. K., Zafar A. A., Tunç O.

International Journal of Applied and Computational Mathematics , cilt.10, sa.3, 2024 (Scopus)

27. New Results on the Ulam–Hyers–Mittag–Leffler Stability of Caputo Fractional-Order Delay Differential Equations

Mathematics , cilt.12, sa.9, 2024 (SCI-Expanded, Scopus)

28. On the Ulam stabilities of nonlinear integral equations and integro-differential equations

Tunç O., Tunç C., Petruşel G., Yao J.

Mathematical Methods in the Applied Sciences , cilt.47, sa.6, ss.4014-4028, 2024 (SCI-Expanded, Scopus)

29. New Results on Ulam Stabilities of Nonlinear Integral Equations

Tunç O., Tunç C., Yao J.

Mathematics , cilt.12, sa.5, 2024 (SCI-Expanded, Scopus)

30. Precision and efficiency of an interpolation approach to weakly singular integral equations

Bhat I. A., Mishra L. N., Mishra V. N., Tunç C., Tunç O.

International Journal of Numerical Methods for Heat and Fluid Flow , cilt.34, sa.3, ss.1479-1499, 2024 (SCI-Expanded, Scopus)

31. Exploring analytical solutions and modulation instability for the nonlinear fractional Gilson–Pickering equation

Rahman R. U., Riaz M. B., Martinovic J., Tunç O.

Results in Physics , cilt.57, 2024 (SCI-Expanded, Scopus)

32. ON THE EXISTENCE OF RESULTS FOR MULTIPLE RETARDED DIFFERENTIAL AND INTEGRO-DIFFERENTIAL EQUATIONS OF SECOND ORDER

Tunç O., Tunç C., Yao J.

JOURNAL OF NONLINEAR AND CONVEX ANALYSIS , cilt.25, sa.1, ss.67-88, 2024 (SCI-Expanded, Scopus)

33. Fractional dynamics and sensitivity analysis of measles epidemic model through vaccination

Riaz M. B., Raza N., Martinovic J., Bakar A., Kurkcu H., Tunç O.

Arab Journal of Basic and Applied Sciences , cilt.31, sa.1, ss.265-281, 2024 (Scopus) Sürdürülebilir Kalkınma

34. EXISTENCE OF SOLUTIONS FOR NONLINEAR IMPULSIVE MULTIPLE RETARDED DIFFERENTIAL AND IMPULSIVE INTEGRO-DIFFERENTIAL EQUATIONS OF SECOND ORDER

Bohner M., Tunç O., Tunç C.

Journal of Nonlinear and Convex Analysis , cilt.25, sa.9, ss.2337-2360, 2024 (SCI-Expanded, Scopus)

35. Dynamical and sensitivity analysis for fractional Kundu–Eckhaus system to produce solitary wave solutions via new mapping approach

Rehman A. U., Riaz M. B., Tunç O.

Arab Journal of Basic and Applied Sciences , cilt.31, sa.1, ss.393-404, 2024 (Scopus)

36. ON THE ULAM TYPE STABILITIES OF ITERATIVE INTEGRAL EQUATIONS

Journal of Nonlinear and Convex Analysis , cilt.25, sa.8, ss.1899-1908, 2024 (SCI-Expanded, Scopus)

37. ON THE ULAM TYPE STABILITIES OF A GENERAL ITERATIVE INTEGRO-DIFFERENTIAL EQUATION INCLUDING A VARIABLE DELAY

Tunç O., Sahu D., Tunç C.

Journal of Nonlinear and Convex Analysis , cilt.25, sa.2, ss.399-417, 2024 (SCI-Expanded, Scopus)

38. Modeling and simulations for the mitigation of atmospheric carbon dioxide through forest management programs

Riaz M. B., Raza N., Martinovic J., Bakar A., Tunç O.

AIMS Mathematics , cilt.9, sa.8, ss.22712-22742, 2024 (SCI-Expanded, Scopus)

39. On the qualitative behaviors of Volterra-Fredholm integro differential equations with multiple time-varying delays

Arab Journal of Basic and Applied Sciences , cilt.31, sa.1, ss.440-453, 2024 (Scopus)

40. Global Existence and Uniqueness of Solutions of Integral Equations with Multiple Variable Delays and Integro Differential Equations: Progressive Contractions

Tunç O., Tunç C., Yao J.

Mathematics , cilt.12, sa.2, 2024 (SCI-Expanded, Scopus)

41. EXISTENCE AND STABILIZATION FOR IMPULSIVE DIFFERENTIAL EQUATIONS OF SECOND ORDER WITH MULTIPLE DELAYS

Pinelas S., Tunç O., Korkmaz E., Tunç C.

Electronic Journal of Differential Equations , cilt.2024, 2024 (SCI-Expanded, Scopus)

42. On the fundamental qualitative properties of integro-delay differential equations

Bohner M., Tunç O., Korkmaz E.

Communications in Nonlinear Science and Numerical Simulation , cilt.125, 2023 (SCI-Expanded, Scopus)

43. On the qualitative analyses solutions of new mathematical models of integro-differential equations with infinite delay

Tunç C., Tunç O., Wen C., Yao J.

Mathematical Methods in the Applied Sciences , cilt.46, sa.13, ss.14087-14103, 2023 (SCI-Expanded, Scopus)

44. On Ulam Stabilities of Delay Hammerstein Integral Equation

Symmetry , cilt.15, sa.9, 2023 (SCI-Expanded, Scopus)

45. On the Qualitative Analysis of Solutions of a Class of Nonlinear Differential Equations of the Second Order with Constant Delay

Journal of Mathematical Sciences (United States) , cilt.274, sa.1, ss.114-125, 2023 (Scopus)

46. Ulam stabilities of nonlinear iterative integro-differential equations

Revista de la Real Academia de Ciencias Exactas, Fisicas y Naturales - Serie A: Matematicas , cilt.117, sa.3, 2023 (SCI-Expanded, Scopus)

47. On the stability, integrability and boundedness analysis of systems of integro-differential equations with time-delay

Tunç C., Tunç O., Yao J.

Fixed Point Theory , cilt.24, sa.2, ss.753-774, 2023 (SCI-Expanded, Scopus)

48. Mathematical analysis of stochastic epidemic model of MERS-corona & application of ergodic theory

Hussain S., Tunç O., Rahman G. u., Khan H., Nadia E.

Mathematics and Computers in Simulation , cilt.207, ss.130-150, 2023 (SCI-Expanded, Scopus) Sürdürülebilir Kalkınma

49. A Fractional Order Covid-19 Epidemic Model with Mittag–Leffler Kernel

Khan H., Ibrahim M., Khan A., Tunç O., Abdeljawad T.

Journal of Mathematical Sciences (United States) , cilt.272, sa.2, ss.284-306, 2023 (Scopus)

50. On System of Variable Order Nonlinear p-Laplacian Fractional Differential Equations with Biological Application

Khan H., Alzabut J., Gulzar H., Tunç O., Pinelas S.

Mathematics , cilt.11, sa.8, 2023 (SCI-Expanded, Scopus)

51. New Results on the Qualitative Analysis of Solutions of Vides by the Lyapunov–Razumikhin Technique

Tunç O., Korkmaz E.

Ukrainian Mathematical Journal , cilt.74, sa.11, ss.1764-1779, 2023 (SCI-Expanded, Scopus)

52. A fractal–fractional COVID-19 model with a negative impact of quarantine on the diabetic patients

Khan H., Alzabut J., Tunç O., Kaabar M. K.

Results in Control and Optimization , cilt.10, 2023 (Scopus) Sürdürülebilir Kalkınma

53. Solution estimates to Caputo proportional fractional derivative delay integro-differential equations

REVISTA DE LA REAL ACADEMIA DE CIENCIAS EXACTAS FISICAS Y NATURALES SERIE A-MATEMATICAS , cilt.117, sa.1, 2023 (SCI-Expanded, Scopus)

54. The stability of nonlinear delay integro-differential equations in the sense of Hyers-Ulam

Graef J. R., Tunç C., Sengun M., Tunç O.

Nonautonomous Dynamical Systems , cilt.10, sa.1, 2023 (Scopus)

55. ON THE FUNDAMENTAL ANALYSES OF SOLUTIONS TO NONLINEAR INTEGRO-DIFFERENTIAL EQUATIONS OF SECOND ORDER

Tuno O.

JOURNAL OF NONLINEAR AND CONVEX ANALYSIS , cilt.24, sa.1, ss.17-32, 2023 (SCI-Expanded, Scopus)

56. On the Enhanced New Qualitative Results of Nonlinear Integro-Differential Equations

Tunç C., Tunç O., Yao J.

Symmetry , cilt.15, sa.1, 2023 (SCI-Expanded, Scopus)

57. Stability tests and solution estimates for non-linear differential equations

International Journal of Optimization and Control: Theories and Applications , cilt.13, sa.1, ss.92-103, 2023 (Scopus, TRDizin)

58. Bifurcation Dynamics and Control Mechanism of a Fractional–Order Delayed Brusselator Chemical Reaction Model

Xu C., Mu D., Liu Z., Pang Y., Aouiti C., Tunç O., et al.

Match , cilt.89, sa.1, ss.73-106, 2023 (SCI-Expanded, Scopus)

59. Riccati technique for oscillation of half-linear/Emden-Fowler neutral dynamic equations

Saker S. H., Sethi A. K., Tunç O., Alzabut J.

Journal of Mathematics and Computer Science , cilt.29, sa.4, ss.387-398, 2023 (ESCI, Scopus)

60. On the Fundamental Analyses of Solutions to Nonlinear Integro-Differential Equations of the Second Order

Mathematics , cilt.10, sa.22, 2022 (SCI-Expanded, Scopus)

61. SOLUTION ESTIMATES AND STABILITY TESTS FOR NONLINEAR DELAY INTEGRO-DIFFERENTIAL EQUATIONS

Pinelas S., Tunç O.

ELECTRONIC JOURNAL OF DIFFERENTIAL EQUATIONS , cilt.2022, sa.68, 2022 (SCI-Expanded, Scopus)

62. Construction of a Lyapunov function for a linear large-scale periodic system with possibly unstable subsystems

Slynko V., Tunc O., Atamas I.

JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS , cilt.359, sa.14, ss.7510-7539, 2022 (SCI-Expanded, Scopus)

63. Stability of time-delay systems via the Razumikhin method

Graef J. R., Tunç C., Tunç O.

BOLETIN DE LA SOCIEDAD MATEMATICA MEXICANA , cilt.28, sa.2, 2022 (ESCI, Scopus)

64. On the existence of solutions of non-linear 2D Volterra integral equations in a Banach Space

Chauhan H. V. S., Singh B., Tunç C., Tunç O.

REVISTA DE LA REAL ACADEMIA DE CIENCIAS EXACTAS FISICAS Y NATURALES SERIE A-MATEMATICAS , cilt.116, sa.3, 2022 (SCI-Expanded, Scopus)

65. New qualitative results to delay integro-differential equations

INTERNATIONAL JOURNAL OF NONLINEAR ANALYSIS AND APPLICATIONS , cilt.13, sa.2, ss.1131-1141, 2022 (ESCI)

66. New Fundamental Results on the Continuous and Discrete Integro-Differential Equations

Tunç O., Tunç C., Yao J., Wen C.

MATHEMATICS , cilt.10, sa.9, 2022 (SCI-Expanded, Scopus)

67. On fractal-fractional Covid-19 mathematical model

Khan H., Ahmad F., Tunç O., Idrees M.

CHAOS SOLITONS & FRACTALS , cilt.157, 2022 (SCI-Expanded, Scopus) Sürdürülebilir Kalkınma

68. QUALITATIVE ANALYSIS OF INTEGRO-DIFFERENTIAL EQUATIONS WITH VARIABLE RETARDATION

Bohner M., Tunç O.

DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS-SERIES B , cilt.27, ss.639-657, 2022 (SCI-Expanded, Scopus)

69. ON THE NEW QUALITATIVE RESULTS IN INTEGRO-DIFFERENTIAL EQUATIONS WITH CAPUTO FRACTIONAL DERIVATIVE AND MULTIPLE KERNELS AND DELAYS

Tunc C., Tunc O., Yao J. C.

JOURNAL OF NONLINEAR AND CONVEX ANALYSIS , cilt.23, sa.11, ss.2577-2591, 2022 (SCI-Expanded, Scopus)

70. STABILITY, INSTABILITY, BOUNDEDNESS AND INTEGRABILITY OF SOLUTIONS OF A CLASS OF INTEGRO-DELAY DIFFERENTIAL EQUATIONS

JOURNAL OF NONLINEAR AND CONVEX ANALYSIS , cilt.23, sa.4, ss.801-819, 2022 (SCI-Expanded, Scopus)

71. New and improved criteria on qualitative results for functional-differential systems

Tunç O., Sivasundaram S., Atan Ö., Tunç C.

Nonlinear Studies , cilt.29, sa.1, ss.289-302, 2022 (Scopus)

72. NEW RESULTS ON THE QUALITATIVE ANALYSIS OF INTEGRO-DIFFERENTIAL EQUATIONS WITH CONSTANT TIME-DELAY

JOURNAL OF NONLINEAR AND CONVEX ANALYSIS , cilt.23, sa.3, ss.435-448, 2022 (SCI-Expanded, Scopus)

73. New and improved criteria on fundamental properties of solutions of integro—delay differential equations with constant delay

Tunç C., Wang Y., Tunç O., YAO J.

Mathematics , cilt.9, sa.24, 2021 (SCI-Expanded, Scopus)

74. An application of Lyapunov-Razumikhin method to behaviors of Volterra integro-differential equations

Nieto J. J., Tunç O.

REVISTA DE LA REAL ACADEMIA DE CIENCIAS EXACTAS FISICAS Y NATURALES SERIE A-MATEMATICAS , cilt.115, sa.4, 2021 (SCI-Expanded, Scopus)

75. On the behaviors of solutions of systems of non-linear differential equations with multiple constant delays

REVISTA DE LA REAL ACADEMIA DE CIENCIAS EXACTAS FISICAS Y NATURALES SERIE A-MATEMATICAS , cilt.115, sa.4, 2021 (SCI-Expanded, Scopus)

76. Qualitative analysis of caputo fractional integro-differential equations with constant delays

Bohner M., Tunç O., Tunç C.

COMPUTATIONAL & APPLIED MATHEMATICS , cilt.40, sa.6, 2021 (SCI-Expanded, Scopus)

77. Delay-Dependent Stability, Integrability and Boundedeness Criteria for Delay Differential Systems

Tunç O., Tunç C., Wang Y.

AXIOMS , cilt.10, sa.3, 2021 (SCI-Expanded, Scopus)

78. On the stability, integrability and boundedness analyses of systems of integro-differential equations with time-delay retardation