@article {1927,
	title = {Relaciones entre escarabajos (Coleoptera: Scarabaeidae) y nidos de tuza (Rodentia: Geomydae): implicaciones biologicas y biogeograficas},
	journal = {Acta Zoologica Mexicana (nueva serie)},
	volume = {62},
	year = {1994},
	pages = {1-9},
	keywords = {{\textquoteright}, association with rodents, nests, Onthophagus, Scarabaeinae},
	author = {Lobo, Jorge M. and Halffter, Gonzalo}
}
@book {2363,
	title = {An{\'a}lisis taxon{\'o}mico, ecol{\'o}gico y biogeogr{\'a}fico de un grupo americano de Onthophagus (Coleoptera, Scarabaeidae)},
	year = {1988},
	note = {have copy},
	publisher = {Torino : Museo regionale di scienze naturali},
	organization = {Torino : Museo regionale di scienze naturali},
	address = {Torino},
	keywords = {dung beetle, food resources mammals, Onthophagus, Scarabaeinae},
	author = {Zunino, M. and Halffter, Gonzalo}
}
