Tchoumatchenco, Platon, Michel Durand-Delga, Jean Ricour, and Michel Wiazemsky. “Geologists of Russian Origin in the Francophone Countries”. Boletín Geológico y Minero 127, no. 2-3 (September 30, 2016): 711–738. Accessed May 3, 2025. https://bgm.revistas.csic.es/index.php/bgm/article/view/305.