P. Rochette, F. Ben Atig, H. Collombat, D. Vandamme, and P. Vlag. “Low Paleosecular Variation at the Equator: A Paleomagnetic Pilgrimage from Galapagos to Esterel With Allan Cox and Hans Zijderveld”. Netherlands Journal of Geosciences, vol. 76, Jan. 1997, pp. 9-19, https://njgjournal.nl/index.php/njg/article/view/12326.