@article{10_4153_CJM_1975_085_4,
     author = {Patterson, Leif-Norman},
     title = {Connexions and {Prolongations}},
     journal = {Canadian journal of mathematics},
     pages = {766--791},
     year = {1975},
     volume = {27},
     number = {4},
     doi = {10.4153/CJM-1975-085-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1975-085-4/}
}