%0 Journal Article %A Murdoch, A. I. %T A coordinate-free approach to surface kinematics %J Glasgow mathematical journal %D 1990 %P 299-307 %V 32 %N 3 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089500009381/ %R 10.1017/S0017089500009381 %F 10_1017_S0017089500009381