Reference

Maria A. Rudzinska (1953): Giant individuals and vigor of populations in Tokophrya infusionum – Annals of the New York Academy of Sciences. (Beinhaltet: Transactions of the New York Academa of Sciences 1898-1937). Frueher: Annals of the Lyceum of Natur.History of New York. – 56: 1087 - 1090.