Ishaaya, I., & Swirski, E. 1970 A rapid laboratory test for determining death in some armored scale species (Coccoidea: Diaspididae).. Entomologia Experimentalis et Applicata 13: 37-42.

Notes: Rapid laboratory test for determining death in Chrysomphalus aonidum and Aonidiella aurantii based on enzymatic activity.