@book{14436,
	author = {Rouche, N. and Mawhin, J. and Mawhin, J. ; jt. auth.},
	title = {Ordinary differential equations; stability and periodic solutions},
	publisher = {Pitman},
	year = {1980},
	series = {Surveys and reference works in Mathematics},
	address = {London},
	note = {"Tr. from the French by R. E. E. Gaines".}
}