Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Francke-Grosmann, H. 1952a. Uber die Ambrosiazucht der beiden Kiefernborkenkafer Myelophilus minor Htg. und Ips acuminatus Gyll. Meddelanden fran Statens Skogsforskoningsinstitut 41:1-52.