Andrusiak, I. V., and O. Ya. Brodyak. “BIORTHOGONAL SYSTEMS OF POWERS OF CONFORMAL MAPPINGS”. PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY. Number, no. 19(73), Dec. 2024, pp. 33-40, doi:10.31471/2304-7399-2024-19(73)-33-40.