Gao Ruiqi et al., 1992c
From dinoflaj3
Gao Ruiqi, Qiao Xiuyun and He Chengquan, 1992c: Cretaceous microphytoplankton from the Songliao Basin and its depositional environment. Acta Micropalaeontologica Sinica, v.9, no.2, p.111-126, pl.1-4. (In Chinese with English summary.) (Cited in the text as Gao Ruiqi et al., 1992c.)