@article{10_4064_ap_18_3_339_344,
     author = {A. Lasota and F. H. Szafraniec},
     title = {Sur les solutions p\'eriodiques d'une \'equation diff\'erentielle ordinaire d'ordre n},
     journal = {Annales Polonici Mathematici},
     pages = {339--344},
     publisher = {mathdoc},
     volume = {18},
     number = {3},
     year = {1966},
     doi = {10.4064/ap-18-3-339-344},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-18-3-339-344/}
}