Romanyuk, V. S. “Kolmogorov Widths and Entropy Numbers in the Orlich Spaces With the Luxembourg Norm”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 69, no. 5, May 2017, pp. 682-94, https://umj.imath.kiev.ua/index.php/umj/article/view/1727.