@article{10_1017_S0017089500009381,
     author = {Murdoch, A. I.},
     title = {A coordinate-free approach to surface kinematics},
     journal = {Glasgow mathematical journal},
     pages = {299--307},
     year = {1990},
     volume = {32},
     number = {3},
     doi = {10.1017/S0017089500009381},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500009381/}
}