Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Troeng, E., S. Linder, and B. Langstrom. 1979. Gasutbytet hos ett 20-arigt tallbestand. V: pilotstudie rorande margborreangrepps inverkan pa gasutbytet hos angripna skott under skadearet. Swed. Conifer. For. Proj., Internal Report. 91. 16 p.