At: Palaeontographica, Abtheilung, B, Paläophytologie, 89, 4-6 By: Müller-Stoll W. R., Müller-Stoll H.
journalAt: Časopis Národního Muzea, Řada, Řada přírodovědna, 1989, 158, 1-4 By: Kvaček Z., Kvaček J.
journalAt: Izvestiya na Botanicheskiya Institut, 1 By: Stefanoff B., Gantschev A.
bookAt: Iskop. Tsvetk. Rast. Ross., St.-Petersburg, 4 By: Vikulin S. V.
bookAt: Iskop. Tsvetk. Rast. Ross., St.-Petersburg, 4 By: Proskurin K. P.
journalAt: American Journal of Botany, 66, 7 By: Eggert D. A., Rothwell G. W.
journalAt: Botany, 94, 9 By: Rothwell G. W., Ohana T.
journalAt: Review of Palaeobotany and Palynology, 97, 3-4 By: Schultka S., Hass H.
journalAt: Taxon, 35, 2 By: Fairon-Demaret M.
journalAt: Botanisches Echo, 1 By: Mez C. C.