@article {53,
	title = {Protein-rich extenders for porcine artificial insemination. Are they really worth it?},
	volume = {2},
	year = {2006},
	pages = {19-34},
	publisher = {IPVS Congress 16-19 july 2006 copenhagen: international pyg veterinary society},
	edition = {Primera Edici{\'o}n},
	isbn = {87-7611-140-7},
	author = {Rocha, Gonzalo and Michel, Jos{\'e} G and Pinal, Leticia and Tapia, Jos{\'e} M}
}
