@article{GDZPPN002079615, title = {A Prime Congruence System.}, journal = {Elemente der Mathematik}, volume = {32}, year = {1977}, pages = {91-93}, zbl = {0353.15025}, url = {http://dml.mathdoc.fr/item/GDZPPN002079615} }
Morley, L.J.; Bishop, Alan. A Prime Congruence System.. Elemente der Mathematik, Tome 32 (1977) pp. 91-93. http://gdmltest.u-ga.fr/item/GDZPPN002079615/