Janssen, N.M.M.; Fozy, I. (2005). Neocomian belemnites and ammonites from the Bersek-hegy (Gerecse Mountains, Hungary), part II: Barremian. Fragmenta Palaeontologica Hungarica, 23, 59-86
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Janssen, N.M.M.; Fozy, I.
2005
Neocomian belemnites and ammonites from the Bersek-hegy (Gerecse Mountains, Hungary), part II: Barremian.