Okonkwo, N. J., E. N. Nwankwo, and I. Uko. “Duration of Exposure and Mortality of Different Strains of Prostephanus Truncatus (Horn) (Coleoptera: Bostrichidae) Exposed to Bifenthrin Insecticide in the Laboratory”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 14, no. 2, Sept. 2014, pp. 286-95, https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/2478.