Bareth, C., & van Liefferinge, M. 1976 Complements a la diagnose d'une Cochenille du hêtre: Cryptococcus fagi Baer. (Insect Homoptère).. Nouvelle Revue d'Entomologie 6: 209-221.

Notes: Studied structure of antennal hairs & sense organs; new sense organs described; main morphological characters presented in a table.