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@article{CM_1951__8__157_0, author = {Michal, A. D. and Mewborn, A. B.}, title = {General projective differential geometry of paths}, journal = {Compositio Mathematica}, pages = {157--168}, publisher = {Kraus Reprint}, volume = {8}, year = {1951}, mrnumber = {38130}, zbl = {0040.24502}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CM_1951__8__157_0/} }
Michal, A. D.; Mewborn, A. B. General projective differential geometry of paths. Compositio Mathematica, Tome 8 (1951), pp. 157-168. http://geodesic.mathdoc.fr/item/CM_1951__8__157_0/