@article{1181072709,
author = {Perko, L.M.},
title = {Melnikov's Method, Stochastic Layers and Nonintegrability of a Perturbed Duffing-Oscillator},
journal = {Rocky Mountain J. Math.},
volume = {22},
number = {4},
year = {1992},
pages = { 973-1000},
language = {en},
url = {http://dml.mathdoc.fr/item/1181072709}
}
Perko, L.M. Melnikov's Method, Stochastic Layers and Nonintegrability of a Perturbed Duffing-Oscillator. Rocky Mountain J. Math., Tome 22 (1992) no. 4, pp. 973-1000. http://gdmltest.u-ga.fr/item/1181072709/