Ryazanov, V. I., et al. “On the Orlicz–Sobolev Classes and Mappings With Bounded Dirichlet Integral”.
Ukrains’kyi Matematychnyi Zhurnal
, vol. 65, no. 9, Sept. 2013, pp. 1254–1265,
https://umj.imath.kiev.ua/index.php/umj/article/view/2506
.