@book{99687,
	author = {Sillas Covarrubias, Refugio and Leyva Mir, Santos Gerardo},
	title = {Incidencia de enfermedades foliares en avena (Avena sativa L.) en los Valles Altos de México},
	publisher = {El autor,},
	year = {2010.},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/111345.pdf}
}