@book{134621,
	author = {Ottaviano, Miguel},
	title = {Electronic commerce for natural gas},
	year = {2002},
	address = {Santa Cruz de la Sierra, Bolivia},
	note = {Adobe Acrobat (PDF)},
	url = {https://biblioteca.iapg.org.ar/ArchivosAdjuntos/lacgec2002/58.zip}
}