Koppers, A., Lindle, M., Colwell, L., Gee, J., Lonsdale, P., Mahoney, J., Duncan, R. 2012. New 40Ar/39Ar Age Progression for the Louisville Hotspot Trail and Implications for Inter-Hotspot Motion, Version 1.0. Interdisciplinary Earth Data Alliance (IEDA).
https://doi.org/10.1594/IEDA/100050. Accessed 2021-01-24.