At: Carpathian Journal of Earth and Environmental Sciences, 6, 1 By: Macovei G.
bookAt: Iskop. Tsvetk. Rast. SSSR, Leningrad, Izdatel'stvo Nauka, Leningradskoe otdelenie, 2 By: Kolakovsky A. A.
bookAt: Iskop. Tsvetk. Rast. SSSR, Leningrad, Izdatel'stvo Nauka, Leningradskoe otdelenie, 2 By: Dorofeev P. I.
journalAt: Memoirs and Proceedings of the Manchester Literary and Philosophical Society, 79, 7 By: Johnson T.
journalAt: Bulletin mensuel de la Société Linnéenne de Lyon, 38, 3 By: Petrescu I.
journalAt: Bulletin mensuel de la Société Linnéenne de Lyon, 42, 3 By: Petrescu I.
journalAt: Phytotaxa, 221, 1 By: Doweld A. B.
journalAt: Neues Jahrbuch für Mineralogie, Geognosie, Geologie und Petrefaktenkunde, 1856, 5 By: Bronn H. G.
journalAt: Bulletin de la Société Botanique de France, 53, 4 By: Lignier E. A. O.
bookAt: Compt. Rendu 9ème Congr. Int. Stratigr. Géol. Carbonif. 1979, Carbondale, Southern Illinois University Press, 1985, 5 By: Brousmiche C., Coquel R., Laveine J.-P., Loboziak S., Šetlík J.