A. J. T. Romein, J. Smit. Carbon-oxygen stable isotope stratigraphy of the Cretaceous-Tertiary boundary interval; data from the Biarritz section (SW France). njg [Internet]. 1981Jan.1 [cited 2026Apr.2];:541-4. Available from: https://njgjournal.nl/index.php/njg/article/view/13660