“CALIBRATION OF PLIENSBACHIAN CALCAREOUS NANNOFOSSIL EVENTS IN TWO AMMONITE-CONTROLLED SECTIONS FROM NORTHERN SPAIN(BASQUE-CANTABRIAN AREA)”. RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA , vol. 108, no. 1, Mar. 2002, https://doi.org/10.13130/2039-4942/5463.