%0 Journal Article %A Nieto, Juan J. %A Uzal Couselo, José Manuel %T Pulse positive periodic solutions for some classes of singular nonlinearities %D 2018 %U https://hdl.handle.net/20.500.14352/100587 %X For given nonlinear differential equations it may occur that there are no periodic solutions. By introducing impulses at prescribed instants, periodic solutions may appear. We consider some impulsive nonlinear first order differential equations having periodic solutions and extend previous results to a larger class of nonlinearities. %~