Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Borodin, A. L. 1968a. Dopolnitel'noe pitan e nasekomykh kak prichina snizheniya prirosta eli na vyrubkakh [Increased feeding by insects as the cause of reduced increment in Norway spruce on clear fellings] . Lessnoi Zhurnal 11:13-16.