@book{138616,
	author = {Ascanio, Alfredo. and e-libro, Corp.},
	title = {Elementos del lenguaje matemático en economía},
	publisher = {El Cid Editor | apuntes,},
	year = {2009.},
	address = {Buenos Aires (Argentina) :},
	url = {https://elibro.net/ereader/politecnicointernacional/29159}
}