L. F. VILLAMIZAR-RIVERO, A. M. COTES, and D. URIBE, “Relation between enzimatic activity and virulence of Metarhizium anisopliae over llanera locust (Orthoptera: Acrididae)”, Rev. Colomb. Entomol., vol. 27, no. 2, pp. 107–114, Jul. 2001.