Papageorgiou, N. S., Vetro, C., & Vetro, F. (2019). Nonlinear vector Duffing inclusions with no growth restriction on the orientor field. Topological Methods in Nonlinear Analysis, 54(1), 257–274. Retrieved from https://apcz.umk.pl/TMNA/article/view/TMNA.2019.041