Gustin, S. M., Coolbaugh, M. F., Engle, M. A., Fitzgerald, B. C., Keislar, R. E., Lindberg, S. E., Nacht, D. M., Quashnick, J., Rytuba, J. J., Sladek, C., Zhang, H., Zehner, R. E. (2003). Atmospheric mercury emissions from mine wastes and surrounding geologically enriched terrains, Environ. Geology, 43, 339-351