@book{98115,
	author = {Hernández Martínez, Alejandro.},
	title = {Análisis de los sistemas de guiado en la agricultura},
	publisher = {El autor,},
	year = {2009},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/109772.pdf}
}