@book{132049,
	author = {Reyes Reyes, Cristián Giovanni. and Labra Jeldres, Alicia,},
	title = {Train Algebras :},
	publisher = {Universidad de Chile,},
	year = {2003.},
	address = {Santiago :},
	note = {Contiene índice.},
	url = {https://elibro.net/ereader/politecnicointernacional/86254}
}