Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{BAG_1991__31_138482, author = {H.-J. Vogel}, title = {On clones of relations}, journal = {Beitr\"age zur Algebra und Geometrie}, pages = {179--192}, publisher = {mathdoc}, volume = {31}, year = {1991}, language = {en}, url = {http://geodesic.mathdoc.fr/item/BAG_1991__31_138482/} }
H.-J. Vogel. On clones of relations. Beiträge zur Algebra und Geometrie, Tome 31 (1991), pp. 179-192. http://geodesic.mathdoc.fr/item/BAG_1991__31_138482/