@article{CTGDC_1984__25_3_221_0,
     author = {Bunge, Marta and Sawyer, Patrice},
     title = {On connections, geodesics and sprays in synthetic differential geometry},
     journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques},
     pages = {221--258},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {25},
     number = {3},
     year = {1984},
     mrnumber = {786551},
     zbl = {0582.18007},
     language = {en},
     url = {http://www.numdam.org/item/CTGDC_1984__25_3_221_0/}
}