@book{4018,
	author = {Plan Avanza 2},
	title = {Estudio sobre Comercio Electrónico B2C 2007},
	publisher = {Red.es,},
	year = {2007},
	series = {Estudio sobre comercio electrónico B2C (Internet)},
	address = {[Madrid] :},
	note = {Desde 2009 se edita bajo el ISSN 2172-458X},
	url = {http://www.ontsi.red.es/ontsi/sites/ontsi/files/Estudio%20sobre%20Comercio%20Electr%C3%B3nico%20B2C%202007.pdf},
}