Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MZ_1982__180_173198, author = {Thomas Ihringer}, title = {On {Groupoids} {Having} a {Linear} {Congruence} {Class} {Geometry.}}, journal = {Mathematische Zeitschrift}, pages = {395--412}, publisher = {mathdoc}, volume = {180}, year = {1982}, zbl = {0471.51003}, url = {http://geodesic.mathdoc.fr/item/MZ_1982__180_173198/} }
Thomas Ihringer. On Groupoids Having a Linear Congruence Class Geometry.. Mathematische Zeitschrift, Tome 180 (1982), pp. 395-412. http://geodesic.mathdoc.fr/item/MZ_1982__180_173198/