@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://www.numdam.org/item/CM_1951__8__157_0/}
}