@article {MR1770884,
	title = {On the existence of bounded solutions for {L}otka-{V}olterra equations},
	journal = {Acta Math. Vietnam.},
	volume = {25},
	number = {2},
	year = {2000},
	pages = {145{\textendash}159},
	issn = {0251-4184},
	author = {Nguyen Huu Du}
}
