E.  Andresen, ?The role of dung beetles in the regeneration of rainforest plants in Central Amazonia?, University of Florida, Gainesville, 2000.

M.  Bertone, ?Dung beetles (Coleoptera: Scarabaeidae and Geotrupidae) in North Carolina Pasture Ecosystem?, North Carolina University, Raleigh, 2006.

M. A.  Bertone, ?Dung beetles (Coleoptera: Scarabaeidae and Geotrupidae) of North Carolina Cattle Pastures  and their Implications for Pasture Improvement?, North Carolina University, Raleigh, 2004.

L. E. O.  Braack, ?An ecological investigation of the insects asociated with exposed carcasses in northern Kruger National Park: A study of populatios and communities?, University of Natal, Pietermaritzburg, South Africa, 1984.

A. J.  Davis, ?The ecology and behaviour of rainforest dung beetles in northern Borneo.?, University of Leeds, Leeds, 1993.

A.  Lopera, ?Distribuición y diversidad de escarabajos coprófagos (Scarabaeidae: Coleoptera) en tres relictos de bosque altoandino (Cordillera Oriental, Vertiente Occidental), Colombia.?, Pontificia Universidad Javeriana, Bogotá. Colombia., 1996.

P. G.  Mariategui, ?Ontherus sulcator (Fabricius) su importancia en el control de Haematobia irritans (Linneus) en campos de la cuenca del río Salado?, Universidad Nacional de Lomas de Zamora, Facultad de Ciencias Agrarias, Ca?tedra de Zoologi?a. , Buenas Aires, 2000.

M.  Forshage, ?State of knowledge of dung beetle phylogeny - a review of phylogenetic hypotheses regarding Aphodiinae (Coleoptera: Scarabaeidae)?, Uppsala University, Uppsala, 2002.

F. _2002_U. _U. _D. _1 -51, ?STATE OF KNOWLEDGE OF DUNG BEETLE PHYLOGENY - a review of phylogenetic hypotheses regarding Aphodiinae (Coleoptera; Scarabaeidae)?, Uppsala Universitet, 2002.

T.  Roslin, ?Spatial Ecology of Dung Beetles?, University of Helsinki, Helsinki, 1999.

D.  Rougan, ?Coleopteres Coprofiles en zone saleienne: Étude biocénotique comporement nidificateur, intervencion dans le recyclage de a matiere organique du sol?, Universite de Orléans, France, Orléans, France, 1987.

G.  Schiffler, ?Fatores determinantes da riqueza local de espécies de Scarabaeidae (Insecta: Coleóptera) em fragmentos de Floresta Estacional Semidecídua?, Universidade Federal de Lavras, Lavras, 2003.

G.  Schiffler, ?FATORES DETERMINANTES DA RIQUEZA LOCAL DE ESPÉCIES DE SCARABAEIDAE (INSECTA: COLEOPTERA) EM FRAGMENTOS DE FLORESTA ESTACIONAL SEMIDECÍDUA?, Universidade Federal de Minas Gerais, Lavras, Brasil, 2003.