%0 Article %J Geophysical Journal International %D 1996 %T Free-surface formulation of mantle convection-I. Basic theory and application to plumes %A Zhong, S. %A Gurnis, M. %A Moresi, L. %N 3 %P 708--718 %V 127 %1 10.1111/j.1365-246X.1996.tb04049.x %K ConMan