Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Gusev, V. I., and M. N. Rimskij-Korsakov. 1951. Opredelitel' povrezhdenii derev'ev i kustarnikov evropeiskoi chasti SSSR [A key to forest growth and destruction in the European part of the USSR]. Goslesbuvizdat, Moskva 1-580.