@article{02186434, title = {On a congruence by J\'anos Bolyai, connected with pseudoprimes.}, journal = {Mathematica Pannonica}, volume = {15}, year = {2004}, pages = {283-288}, zbl = {1064.11002}, language = {en}, url = {http://dml.mathdoc.fr/item/02186434} }
Kiss, Elemér; Sándor, József. On a congruence by János Bolyai, connected with pseudoprimes.. Mathematica Pannonica, Tome 15 (2004) pp. 283-288. http://gdmltest.u-ga.fr/item/02186434/