Romanyuk, A., & Романюк, А. (1992). The best trigonometric and bilinear approximations of the functions of many variables from the classes $B_{p,\theta}^r$. I. Institute of Mathematics, NAS of Ukraine.
Chicago Style (17th ed.) CitationRomanyuk, A.S, and А.С Романюк. The Best Trigonometric and Bilinear Approximations of the Functions of Many Variables from the Classes $B_{p,\theta}^r$. I. Institute of Mathematics, NAS of Ukraine, 1992.
MLA (8th ed.) CitationRomanyuk, A.S, and А.С Романюк. The Best Trigonometric and Bilinear Approximations of the Functions of Many Variables from the Classes $B_{p,\theta}^r$. I. Institute of Mathematics, NAS of Ukraine, 1992.
Warning: These citations may not always be 100% accurate.