Zhuravlev, Andrey V., Yadviga A. Vevel, Denis A. Gruzdev, and Andrey V. Erofeevsky. “Late Mississippian (early Serpukhovian) Carbon Isotope Record of Northern Laurussia: A Proposal for the Viséan Serpukhovian Boundary”. Revista Mexicana de Ciencias Geológicas 40, no. 1 (April 1, 2023): 35–43. Accessed November 23, 2024. https://rmcg.geociencias.unam.mx/index.php/rmcg/article/view/1722.