@book{MTMT:1611362,
	title = {Oscillation theory of delay differential equations: with applications},
	url = {https://m2.mtmt.hu/api/publication/1611362},
	isbn = {0198535821},
	author = {Győri, István and Ladas, GE},
	publisher = {OUP},
	unique-id = {1611362},
	year = {1991}
}