Kawami et al., 2009
From dinoflaj3
Kawami, M., van Wetzel, R., Koeman, R.P.T. and Matsuoka, K., 2009: Protoperidinium tricingulatum sp. nov. (Dinophyceae), a new motile form of a round brown, and spiny dinoflagellate cyst. Phycological Research, v.57, p.259-267.