@article{bwmeta1.element.desklight-e5f1d9af-b7bb-40f8-8ff0-5c61a4b16684,
author = {J. W. Heidel},
title = {Addenda to ``Periodic solutions of $x" + f(x)x^{\prime 2n} + g(x) = 0$ with arbitrarily large period''},
journal = {Annales Polonici Mathematici},
volume = {28},
year = {1973},
pages = {163-165},
zbl = {0242.34037},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.desklight-e5f1d9af-b7bb-40f8-8ff0-5c61a4b16684}
}
J. W. Heidel. Addenda to “Periodic solutions of $x" + f(x)x^{\prime 2n} + g(x) = 0$ with arbitrarily large period”. Annales Polonici Mathematici, Tome 28 (1973) pp. 163-165. http://gdmltest.u-ga.fr/item/bwmeta1.element.desklight-e5f1d9af-b7bb-40f8-8ff0-5c61a4b16684/