Azzam-Laouir, Dalila, and Sabrina Lounis. “Nonconvex Perturbations of Second Order Maximal Monotone Differential Inclusions”. Topological Methods in Nonlinear Analysis 35, no. 2 (April 23, 2010): 305–317. Accessed July 22, 2024. https://apcz.umk.pl/TMNA/article/view/TMNA.2010.018.