Antoinette Sprenger, and Warner G. Ten Kate. “Cross-Spectral Analysis of Two Late Berriasian Rhythmic Limestone-Marl Successions in SE Spain and SE France Favours Orbital Control”. Netherlands Journal of Geosciences, vol. 72, Jan. 1993, pp. 69-83, https://njgjournal.nl/index.php/njg/article/view/12499.