[1]
StasyukS.A. 2008. Best <i>M</i>-term orthogonal trigonometric approximations of the classes <i>B</i><sup> Ω</sup><sub>p,θ</sub&gt; of periodic functions of many variables. Ukrains’kyi Matematychnyi Zhurnal. 60, 5 (May 2008), 647 -.