Schmus, W., Schneider, D., Holm, D., Dodson, S., & Nelson, B. (2007). New Insights into the Southern Margin of the Archean–Proterozoic Boundary in the North-Central United States Based on U–Pb, Sm–Nd, and Ar–Ar Geochronology. Elsevier Science. https://doi.org/10.1016/j.precamres.2007.02.011
Schmus, W, David Schneider, Daniel Holm, S Dodson, and B Nelson. 2007. “New Insights into the Southern Margin of the Archean–Proterozoic Boundary in the North-Central United States Based on U–Pb, Sm–Nd, and Ar–Ar Geochronology”. Elsevier Science. https://doi.org/10.1016/j.precamres.2007.02.011.
Schmus, W., D. Schneider, D. Holm, S. Dodson, and B. Nelson. New Insights into the Southern Margin of the Archean–Proterozoic Boundary in the North-Central United States Based on U–Pb, Sm–Nd, and Ar–Ar Geochronology. Elsevier Science, 1 Jan. 2007, doi:10.1016/j.precamres.2007.02.011.