New fossil cockroaches from Houcheng Formation of Yanqing County, Beijing - 1997
Discovery of fossil insects from Houcheng Formation of Hebei Province and establish of Houcheng entomofauna - 1997
New fossil Blattodea, Coleoptera and Mecoptera (Insecta) from Houcheng Formation of Yanqing County, Beijing - 1997
Present study condition of Chinese aphids (Insecta: Homoptera) and its problems I. Summation of Chinese fossil aphids, emendation of aphid taxon and making of a new Chinese fossil aphid list - 1998