Neagu, T. (1970). Micropaleontological and stratigraphical study of the upper Cretaceous deposits between the upper valleys of the Buzau and Riul Negru Rivers (Eastern Carpathians). Memorii, Institutul Geologic. 12: 7-109.
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Neagu, T.
1970
Micropaleontological and stratigraphical study of the upper Cretaceous deposits between the upper valleys of the Buzau and Riul Negru Rivers (Eastern Carpathians)