Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MS2_1960__8_165741, author = {B. Jonsson}, title = {Homogeneous {Universal} {Relational} {Systems.}}, journal = {Mathematica Scandinavica}, pages = {137--142}, publisher = {mathdoc}, volume = {8}, year = {1960}, zbl = {0173.00505}, url = {http://geodesic.mathdoc.fr/item/MS2_1960__8_165741/} }
B. Jonsson. Homogeneous Universal Relational Systems.. Mathematica Scandinavica, Tome 8 (1960), pp. 137-142. http://geodesic.mathdoc.fr/item/MS2_1960__8_165741/