Drgon, S., Huba, A., & Beros, D. 1962 [The possible ways of using organophosphorus insecticides in combination with mineral oils for the control of the San José scale.]. Prace Lab. Ochr. Rast. 221-232.

Notes: This study evaluates the methods of chemical control of Quadraspidiotus perniciosus in Czechoslovakia and abroad.