G. V. SOBERÓN-RISCO, C. ROJAS-IDROGO, M. J. KATO, J. SAAVEDRA-DÍAZ, J. ARMANDO-JR., and G. E. DELGADO-PAREDES, “Larvicidal activity of Piper tuberculatum on Spodoptera frugiperda (Lepidoptera: Noctuidae) under laboratory conditions”, Rev. Colomb. Entomol., vol. 38, no. 1, pp. 35–41, Jan. 2012.