Complete families of periodic solutions of differential equations.
Commentarii mathematici Helvetici, Tome 28 (1954), pp. 341-345
@article{CMH_1954__28_139089,
author = {Solomon Lefschetz},
title = {Complete families of periodic solutions of differential equations.},
journal = {Commentarii mathematici Helvetici},
pages = {341--345},
year = {1954},
volume = {28},
zbl = {0056.31103},
url = {http://geodesic.mathdoc.fr/item/CMH_1954__28_139089/}
}
Solomon Lefschetz. Complete families of periodic solutions of differential equations.. Commentarii mathematici Helvetici, Tome 28 (1954), pp. 341-345. http://geodesic.mathdoc.fr/item/CMH_1954__28_139089/