Retrieved July 13, 2005* Vita-Finzi, C., Howarth, R.J., Tapper, S., and Robinson, C. (2004) "Venusian Craters and the Origin of Coronae" "Lunar and Planetary Science" XXXV* Stevenson, D. J., (2003).
Retrieved July 13, 2005* Vita-Finzi, C., Howarth, R.J., Tapper, S., and Robinson, C. (2004) «Venusian Craters and the Origin of Coronae» "Lunar and Planetary Science" XXXV* Stofan, E.R., Hamilton, V.E., Janes, D.M., and Smrekar, S.E.