Reference

Denis Lynn, S.G. Grandsen, A.-D.G. Wright, G. Josephson (2000): Characterization of a new species of the ciliate Tetrahymena (Ciliophora: Oligohymenophorea) isolated from the urine of a dog: first report of Tetrahymena from a mammal – Acta Protozool. – 39: 289 - 294.