@article{00219488, title = {The congruence lattice of implication algebras.}, journal = {Mathematica Pannonica}, volume = {3}, year = {1992}, pages = {115-123}, zbl = {0774.08008}, language = {en}, url = {http://dml.mathdoc.fr/item/00219488} }
Radelecki, Sándor. The congruence lattice of implication algebras.. Mathematica Pannonica, Tome 3 (1992) pp. 115-123. http://gdmltest.u-ga.fr/item/00219488/