The chromosomes of the earthworms. I. The evolution of polyploidy. Heredity. 1952; 6: 55-76, 1954
Polyploidy in plant evolution an. Priroda 30(4): 48-52, 1981
The significance of polyploidy in plant evolution. Amer Nat 74(750): 54-66, 1940
Polyploidy in plant evolution: summary. Basic Life Sciences 13: 145-147, 1979
The significance of polyploidy for evolution and plant breeding. Angew. Bot, 25: 92-114, 1943