@book{10757,
	author = {Krebs, Charles J.},
	title = {Ecology, the experimental analysis of distribution and abundance},
	publisher = {Haper & Row,},
	year = {1978},
	series = {Harper International edition},
	address = {New York :},
	edition = {2 ed.},
	note = {bibliografía, pp. 630-665}
}