BUSTILLO, A. E. (1976) “DIFFERENCES IN THE LIFE CYCLE AND INCIDENCE IN THE NUMBER OF INSTARES OF Glena bisulca (LEPIDOPTERA: GEOMETRIDAE) AT DIFFERENT ENVIRONMENTAL TEMPERATURES”, Revista Colombiana de Entomología, 2(3), pp. 99–103. doi: 10.25100/socolen.v2i3.10417.