@article{BUMI_1967_3_22_2_a7,
     author = {Stoka, Marius I.},
     title = {Connexions invariantes sur des espaces riemanniens \`a m\'etrique  ind\'efinie \`a courbure constante.},
     journal = {Bollettino della Unione matematica italiana},
     pages = {219--227},
     publisher = {mathdoc},
     volume = {Ser. 3, 22},
     number = {2},
     year = {1967},
     zbl = {0153.23103},
     mrnumber = {220211},
     url = {http://geodesic.mathdoc.fr/item/BUMI_1967_3_22_2_a7/}
}