Sarai et al., 2013
From dinoflaj3
Sarai, C., Yamaguchi, A., Kawami, H. and Matsuoka, K., 2013: Two new species formally attributed to Protoperidinium oblongum (Aurivillius) Park et Dodge (Peridiniales, Dinophyceae): evidence from cyst incubation experiments. Review of Palaeobotany and Palynology, v.192 p.103-118, pl.1-5.