@article{urn:eudml:doc:38575, title = {Periodic boundary value problem for nonlinear first order ordinary differential equations with impulses at fixed moments.}, journal = {Extracta Mathematicae}, volume = {13}, year = {1998}, pages = {313-326}, zbl = {0987.34009}, mrnumber = {MR1695501}, language = {en}, url = {http://dml.mathdoc.fr/item/urn:eudml:doc:38575} }
Franco, Daniel; Nieto, Juan J.; Rogovchenko, Yuri V. Periodic boundary value problem for nonlinear first order ordinary differential equations with impulses at fixed moments.. Extracta Mathematicae, Tome 13 (1998) pp. 313-326. http://gdmltest.u-ga.fr/item/urn:eudml:doc:38575/