Báldi, T.; Less, G.; Mandic, O. (1999). Some new aspects of the lower boundary of the Egerian stage (Oligocene, chronostratigraphic scale of the Paratethys area). Abhandlungen der geologischen Bundesanstalt. 56(2): 653-668.
474875
Báldi, T.; Less, G.; Mandic, O.
1999
Some new aspects of the lower boundary of the Egerian stage (Oligocene, chronostratigraphic scale of the Paratethys area)