Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Lofting, E. C. L. 1951. Nogle betragtninger over Fomes annosus og Hylesinus piniperda [Some reflections of Pomes annosus and Hylesinus piniperda] . Dansk Skovforeingens Tidsskrift 36:645-652.