Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Lieutier, F. 1978. Les acariens associes a Ips typographus et Ips sexdentatus (Coleoptera: Scolytidae) en region Parisienne et les variations de leurs populations au cours du cycle annuel . Bulletin d' Ecologie 9:307-322.