@article{JRAM_1979__0307_0308_152111,
     author = {Bernard Oriat and Philippe Satg\'e},
     title = {Un essai de g\'en\'eralisation du },
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {134--159},
     publisher = {mathdoc},
     volume = {0307_0308},
     year = {1979},
     zbl = {0395.12015},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1979__0307_0308_152111/}
}