N. Lukwa, A. Makuwaza, S. Mutambu, and P. Munosiyei, “The residual effect of lambda-cyhalothrin, deltamethrin and dichlorodiphenyltrichloroethane in Zhombe, Kwekwe district, Zimbabwe”, J Entomol Acarol Res, vol. 44, no. 2, p. e10, Aug. 2012.