N. J. Okonkwo, 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”, IJSBAR, vol. 14, no. 2, pp. 286–295, Sep. 2014.