Patterson and Zölffel, 1991
From dinoflaj3
Patterson, D.J. and Zölffel, M., 1991: Heterotrophic flagellates of uncertain taxonomic position. In: Patterson, D. J. and Larson, J. (editors), The Biology of Free-Living Heterotrophic Flagellates. Oxford, Oxford University Press, p. 427-476.