@book{220318,
	author = {Vega Hernández, Nora Yessica and Corrales García, José Joel Enrique},
	title = {Empleo de cubiertas comestibles en nopalito desespinado (Opuntia sp.) de la variedad Milpa Alta /},
	publisher = {El autor,},
	year = {2007},
	address = {Chapingo, México :},
	url = {http://10.13.5.2/tesis/105922.pdf}
}