Fedorova, 1980

Fedorova, V.A., 1980: Rol organogennogo mikrofitoplanktona pri korrelatzii udalennykh razrezov (na primere izutcheniya aptskikh otlaoshenii severnogo Prikaspia). In Timoshina, N.A. (editor), Mikrofitofossilii v neftyanoi geologii, p.60-78, pl.1-3; Vsesoyuznyi Neftyanoi Nautchno-Issledovatelskii Geologorazvedochnyi Institut, Leningrad (VNIGRI), Leningrad, Russia.