Bonotto, Everaldo Mello, and Manuel Z. Jimenez. “On Impulsive Semidynamical Systems: Minimal, Recurrent and Almost Periodic Motions”. Topological Methods in Nonlinear Analysis 44, no. 1 (April 12, 2016): 121–141. Accessed March 30, 2023. https://apcz.umk.pl/TMNA/article/view/TMNA.2014.039.