@article{GDZPPN002473259, title = {On Axioms of congruence Due to H.G. Forder.}, journal = {Monatshefte f\"ur Mathematik}, volume = {65}, year = {1961}, pages = {270-276}, zbl = {0103.13601}, url = {http://dml.mathdoc.fr/item/GDZPPN002473259} }
Szász, P. On Axioms of congruence Due to H.G. Forder.. Monatshefte für Mathematik, Tome 65 (1961) pp. 270-276. http://gdmltest.u-ga.fr/item/GDZPPN002473259/