2 literature references for Eriococcus betulaefoliae Tang & Hao, 1995:

Author: Miller, D.R. & Gimpel, M.E.
Year: 1996
Title: Nomenclatural changes in the Eriococcidae (Homoptera: Coccoidea).
Source: Proceedings of the Entomological Society of Washington
Author: Tao, C.C.C.
Year: 1999
Title: List of Coccoidea (Homoptera) of China.
Source: Special Publication (Taiwan Agricultural Research Institute)