TY - JOUR AU - Nieto, Juan J. AU - Uzal Couselo, José Manuel PY - 2018 DO - 10.1016/j.aml.2018.06.025 UR - https://hdl.handle.net/20.500.14352/100587 T2 - Applied Mathematics Letters AB - 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... LA - eng M2 - 134 PB - Elsevier TI - Pulse positive periodic solutions for some classes of singular nonlinearities TY - journal article VL - 86 ER -