Mustafayev, H. 1985. The essential commutant of the shift operator and estimation of distance. Transactions of National Academy of Sciences of Azerbaijan. Series of Physical-Technical and Mathematical Sciences , vol.6, no.3 , 15-19.

Mustafayev, H., (1985). The essential commutant of the shift operator and estimation of distance. Transactions of National Academy of Sciences of Azerbaijan. Series of Physical-Technical and Mathematical Sciences , vol.6, no.3, 15-19.

Mustafayev, Heybetkulu. "The essential commutant of the shift operator and estimation of distance," Transactions of National Academy of Sciences of Azerbaijan. Series of Physical-Technical and Mathematical Sciences , vol.6, no.3, 15-19, 1985

Mustafayev, Heybetkulu. "The essential commutant of the shift operator and estimation of distance." Transactions of National Academy of Sciences of Azerbaijan. Series of Physical-Technical and Mathematical Sciences , vol.6, no.3, pp.15-19, 1985

Mustafayev, H. (1985) . "The essential commutant of the shift operator and estimation of distance." Transactions of National Academy of Sciences of Azerbaijan. Series of Physical-Technical and Mathematical Sciences , vol.6, no.3, pp.15-19.

@article{article, author={Heybetkulu Mustafayev}, title={The essential commutant of the shift operator and estimation of distance}, journal={Transactions of National Academy of Sciences of Azerbaijan. Series of Physical-Technical and Mathematical Sciences}, year=1985, pages={15-19} }