@book{130118,
	author = {Montamat, Daniel Gustavo},
	title = {El petróleo y el gas en la economía},
	year = {feb. 1999},
	url = {https://biblioteca.iapg.org.ar/cgi-bin/koha/opac-retrieve-file.pl?id=75933730c9ebe5ac1d9c76916a0e3909}
}