Skrypnik, I. V. “New Conditions for Averaging of Nonlinear Dirichlet Problems in Perforated Domains”. Ukrains’kyi Matematychnyi Zhurnal 48, no. 5 (May 25, 1996): 675-694. Accessed May 18, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/5301.