@article{1206139799,
author = {Yanagiwara, Hiroki},
title = {Maximum of the amplitude of the periodic solution of van der Pol's equation},
journal = {J. Sci. Hiroshima Univ. Ser. A-I Math.},
volume = {25},
number = {2},
year = {1961},
pages = { 127-134},
language = {en},
url = {http://dml.mathdoc.fr/item/1206139799}
}
Yanagiwara, Hiroki. Maximum of the amplitude of the periodic solution of van der Pol's equation. J. Sci. Hiroshima Univ. Ser. A-I Math., Tome 25 (1961) no. 2, pp. 127-134. http://gdmltest.u-ga.fr/item/1206139799/