Courtinat, 2000
From dinoflaj2
Courtinat, B., 2000: Review of the dinoflagellate cyst Subtilisphaera? inaffecta (Drugg, 1978) Bujak & Davies, 1983 and S.? paeminosa (Drugg, 1978) Bujak & Davies, 1983. Journal of Micropalaeontology, v.19, pt.2, p.165-175, pl.1.
