Westgate, J. A. and Briggs, N. D. (1980) “Dating Methods of Pleistocene Deposits and Their Problems: V. Tephrochronology and Fission-Track Dating”, Geoscience Canada, 7(1). Available at: https://journals.lib.unb.ca/index.php/GC/article/view/3198 (Accessed: 3 May 2024).