Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Ozolin, G. P. 1959. Opyt selektsii il'movykh porod na ustoichivost k gollandskoi bolezni [Experience in selecting elm species resistant to Dutch disease] . Vestnik Sel'skokhoziaistvennoi Nauki 4:139-142.