@book{91758,
	author = {Barreira, Luís, and Valls, Claudia.},
	title = {Ejercicios de análisis complejo y ecuaciones diferenciales /},
	publisher = {Delta Publicaciones,},
	year = {2015.},
	address = {Collado Villalba, Madrid :},
	url = {https://elibro.net/ereader/politecnicointernacional/169666}
}