At: Neues Jahrbuch für Mineralogie, Geognosie, Geologie und Petrefaktenkunde, 1833, 2 By: Zenker J. C.
bookAt: Compt. Rend. 6ème Congr. Int. Stratigr. Géol. Carbonif., Sheffield, 1967, Maestricht, van Aelst, [1970], 3 By: Hallett D.
journalAt: Biostratigraphie du Paléozoïque, Series, Collection, 7 By: Vachard D.
journalAt: Trudy Vsesoyuznogo Neftianogo Nauchno-Issledovatel'skogo Geologorazvedochnogo Instituta, Series, Novaja Serija, 60 By: Bykova E. V.
journalAt: Izvestiya Kazanskogo Filiala Akademii Nauk SSSR, Series, Geologicheskikh nauk, 1959, 7 By: Antropov I. A.
journalAt: Paleontologicheskii Zhurnal, 1963, 4 By: Pronina T. V.
journalAt: Trudy Vsesoyuznogo Neftianogo Nauchno-Issledovatel'skogo Geologorazvedochnogo Instituta, Series, Novaja Serija, 87 By: Bykova E. V.
bookAt: Foram. Stratigr. Kamennoug. Karatau Talas. Alatau, Moscow, Izdateľstvo Akademii Nauk SSSR By: Bogush O. I., Juferev O. V.
journalAt: Trudy Instituta Geologii Ural'skogo Filiala Akademii Nauk SSSR, 74 By: Tchuvashov B. I.
bookAt: Foraminif. Karadoka Vost. Kazakhst., Alma-Ata, Izdateľstvo Akademii Nauk Kazakhskoj SSR By: Bykova E. V.