Bujak, 1980
From dinoflaj3
Bujak, J.P., 1980: V. Dinoflagellate cysts and acritarchs from the Eocene Barton Beds of southern England. In: Bujak, J.P., Downie, C., Eaton, G.L. and Williams, G.L., Dinoflagellate cysts and acritarchs from the Eocene of southern England. Special Papers in Palaeontology, 24, p.36-91, pl. 13-22.