Zaderei, P. V., Задерей, П. В., & Задерей, П. В. (1993). Approximation of $(\bar \psi ,\bar \beta )$ -differentiable periodic functions of many variables. Institute of Mathematics, NAS of Ukraine.
Chicago Style (17th ed.) CitationZaderei, P. V., П. В Задерей, and П. В Задерей. Approximation of $(\bar \psi ,\bar \beta )$ -differentiable Periodic Functions of Many Variables. Institute of Mathematics, NAS of Ukraine, 1993.
MLA (8th ed.) CitationZaderei, P. V., et al. Approximation of $(\bar \psi ,\bar \beta )$ -differentiable Periodic Functions of Many Variables. Institute of Mathematics, NAS of Ukraine, 1993.
Warning: These citations may not always be 100% accurate.