Romanyuk, A. S., Романюк, А. С., & Романюк, А. С. (1998). Trigonometric widths of the classes $B_{p,θ}^ r$ of functions of many variables in the space $L_q$. Institute of Mathematics, NAS of Ukraine.
Chicago Style (17th ed.) CitationRomanyuk, A. S., А. С Романюк, and А. С Романюк. Trigonometric Widths of the Classes $B_{p,θ}^ R$ of Functions of Many Variables in the Space $L_q$. Institute of Mathematics, NAS of Ukraine, 1998.
MLA (8th ed.) CitationRomanyuk, A. S., et al. Trigonometric Widths of the Classes $B_{p,θ}^ R$ of Functions of Many Variables in the Space $L_q$. Institute of Mathematics, NAS of Ukraine, 1998.
Warning: These citations may not always be 100% accurate.