Bartuzel G, Fryszkowski A. Pointwise estimates in the Filippov lemma and Filippov-Ważewski theorem for fourth order differential inclusions. TMNA [Internet]. 2018 Aug. 4 [cited 2024 Jul. 3];52(2):515-40. Available from: https://apcz.umk.pl/TMNA/article/view/TMNA.2018.014