Fedorenko, A. S., Fedorenko, O., Федоренко, А. С., & Федоренко, О. С. (2004). The Best $m$-Term Trigonometric Approximations of the Classes $L_{\beta ,p}^\Psi$ in Uniform Metric. Institute of Mathematics, NAS of Ukraine.
Chicago Style (17th ed.) CitationFedorenko, A. S., O.S Fedorenko, А. С Федоренко, and О. С Федоренко. The Best $m$-Term Trigonometric Approximations of the Classes $L_{\beta ,p}^\Psi$ in Uniform Metric. Institute of Mathematics, NAS of Ukraine, 2004.
MLA (8th ed.) CitationFedorenko, A. S., et al. The Best $m$-Term Trigonometric Approximations of the Classes $L_{\beta ,p}^\Psi$ in Uniform Metric. Institute of Mathematics, NAS of Ukraine, 2004.
Warning: These citations may not always be 100% accurate.