Skrypnik, I. V. “On Compensated Compactness for Nonlinear Elliptic Problems in Perforated Domains”. Ukrains’kyi Matematychnyi Zhurnal 52, no. 11 (November 25, 2000): 1534–1549. Accessed December 6, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/4559.