C. SEGURA, F. GUZMÁN, M. E. PATARROYO, and S. ORDUZ, “Activation of the Bacillus thuringiensis subesp. medellin CryllBb protein by digestion with trypsin and Culex quinquefasciatus (Diptero: Culicidae) larval gut extracts”, Rev. Colomb. Entomol., vol. 24, no. 2, pp. 117–121, Jul. 1998.