Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Joly, R. 1968. L'extension en Europe de Gnathotrichusmateriarius Fitch (Coleoptere Scolytidae) [The extention through Europe of Gnathotrichus materiarius] . Comptes Rendu Hebdomadaires des Seances de l'Academic d'Agriculture de France 54:508-511.