At: Review of Palaeobotany and Palynology, 258 By: Huang Y.-J., Momohara A., Wang Y.-Q.
journalAt: Bulletin of the Oil and Natural Gas Corporation Ltd., 30, 2 By: Kumar A., Sharma J., Kapoor P. N.
bookAt: Fl. SSSR, Leningrad-Moscow, Izdateľstvo Akademii Nauk SSSR, 1 By: Juzepczuk S. V.
journalAt: Botanicheskii Zhurnal, 75, 10 By: Ştefîrţă A. G.
journalAt: Trudy Vsesoyuznogo Nauchno-Issledovatel'skogo Geologicheskogo Instituta, Series, Novaja, 141, 1 By: Boitzova E. P.
bookAt: Osnovy Paleontol., Moscow, Izdateľstvo Akademii Nauk SSSR, [14] By: Ananiev A. R.
bookAt: Osnovy Paleontol., Moscow, Izdateľstvo Akademii Nauk SSSR, [15] By: Dorofeev P. I.
journalAt: Trudy Vsesoyuznogo Neftianogo Nauchno-Issledovatel'skogo Geologorazvedochnogo Instituta, Series, Novaja Serija, 177 By: Markova L. G.
bookAt: Osnovy Paleontol., Moscow, Izdateľstvo Akademii Nauk SSSR, [15] By: Turutanova-Ketova A. I.
journalAt: Trudy Vsesoyuznogo Nauchno-Issledovatel'skogo Geologicheskogo Instituta, Series, Novaja, 141, 1 By: Panova L. A.