Byrne, Paul K., Ostrach, Lillian R., Fassett, Caleb I., Chapman, Clark R., Denevi, Brett W., Evans, Alexander J., Klimczak, Christian, Banks, Maria E., Head, James W., and Solomon, Sean C. 2016. "Widespread effusive volcanism on Mercury likely ended by about 3.5 Ga: End of effusive volcanism on Mercury." Geophysical Research Letters. 43 (14):7408–7416. https://doi.org/10.1002/2016GL069412