Sarjeant and Downie, 1974
From dinoflaj2
Sarjeant, W.A.S. and Downie, C., 1974: The classification of dinoflagellate cysts above generic level: a discussion and revisions. In: Symposium on Stratigraphic Palynology, Birbal Sahni Institute of Palaeobotany, Special Publication, 3, p.9-32.
