1. Prodromus d'une histoire des végétaux fossiles;Brongniart;Dict. Sci. Nat.,1828
2. Tertiary Flora from the northern part of the Petipsy area (North Bohemia Basin);Bužek;Rozpr. Ustr. Ust. Geol.,1971
3. Small-sized plant remains from the coal formation of the Chomutov-Most-Teplice basin;Bužek;Sb. Geol. Ved. Paleontol.,1964
4. Azolla remains from the Lower Miocene of the North-Bohemian Basin, Czechoslovakia;Bužek;Tertiary Res.,1988