1. Balachowsky AS 1949. Coleopteres Scolytides. Faune de France 50. Paris France: Lechevalier.
2. BAWBILT 2002. Task 2 & 3: Damages and Control. BAWBILT Database COST E-16 Action BAWBILT. Universite Libre de Bruxelles Brussels Belgium. http://lubies.ulb.ac.be/bawbilt/.
3. Burakowski B Mroczkowski M Stefanska J 1992. Volume 18 Part XXIII. Beetles - Coleoptera. Curculionoidea apart from Curculionidae. Katalog Fauny Polski 23(18):324 pp.; many ref.
4. Coslop D Masutti L 1978. Animals and seeds of Pinus cembra L. in the Passo di Lavaze (Dolomites). Frustula Entomologica 1(N.S.):99-122
5. EPPO 2014. PQR database. Paris France: European and Mediterranean Plant Protection Organization. http://www.eppo.int/DATABASES/pqr/pqr.htm