Head, J. W., Murchie, Scott L., Prockter, Louise M., Solomon, Sean C., Strom, Robert G., Chapman, Clark R., Watters, Thomas R., Blewett, David T., Gillis-Davies, Jeffrey J., Fassett, C. I., Dickson, J. L., Hurwitz, D. M., and Ostrach, L. R. 2009. "
Evidence for intrusive activity on Mercury from the first MESSENGER flyby."
Earth and Planetary Science Letters, 285, (3-4) 251–262.
https://doi.org/10.1016/j.epsl.2009.03.008.