Kaczmarska, I. & Fryxell, G.A. (1986). The diatom genus Nitzschia: Morphologic variation of some small bicapitate species in two Gulf Stream warm core rings. In: M. Ricard (ed.), Proceedings of the Eighth International Diatom Symposium, Paris, August 27- September 1, 1984. Koeltz Scientific Books, Koenigstein, pp. 237-252