@book {1713,
	title = {The nesting behavior of dung beetles (Scarabaeinae): an ecological and evolutive approach},
	year = {1982},
	note = {have a copy of book},
	publisher = {Instituto de Ecolog{\'\i}a},
	organization = {Instituto de Ecolog{\'\i}a},
	address = {M{\'e}xico, D. F.},
	keywords = {dung beetle, dung resources mammals, mammal, Scarabaeinae},
	author = {Halffter, Gonzalo and Edmonds, W. D.}
}
@book {2185,
	title = {Forest Entomology in East Africa. Forest Insects of Tanzania},
	year = {2006},
	publisher = {Springer},
	organization = {Springer},
	chapter = {1-26},
	address = {The Netherlands},
	author = {Schabel, Hans G.}
}
@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}
}
