TY - JOUR AU - Murdoch, A. I. TI - A coordinate-free approach to surface kinematics JO - Glasgow mathematical journal PY - 1990 SP - 299 EP - 307 VL - 32 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0017089500009381/ DO - 10.1017/S0017089500009381 ID - 10_1017_S0017089500009381 ER -