Schroeder, L. M. (1988). Host recognition in Tomicus piniperda (Coleoptera, Scolytidae) and other bark beetles attacking Scots pine. Division of Forest Entomology, Dept. of Plant and Forest Protection, Swedish University of Agricultural Sciences.

Schroeder, Leif Martin. Host Recognition in Tomicus Piniperda (Coleoptera, Scolytidae) and Other Bark Beetles Attacking Scots Pine. Uppsala: Division of Forest Entomology, Dept. of Plant and Forest Protection, Swedish University of Agricultural Sciences, 1988.

Schroeder, Leif Martin. Host Recognition in Tomicus Piniperda (Coleoptera, Scolytidae) and Other Bark Beetles Attacking Scots Pine. Division of Forest Entomology, Dept. of Plant and Forest Protection, Swedish University of Agricultural Sciences, 1988.