@article{1102983323, author = {Thorne, B. J.}, title = {${\rm A}-{\rm P}$ congruences on Baer semigroups.}, journal = {Pacific J. Math.}, volume = {31}, number = {3}, year = {1969}, pages = { 681-698}, language = {en}, url = {http://dml.mathdoc.fr/item/1102983323} }
Thorne, B. J. ${\rm A}-{\rm P}$ congruences on Baer semigroups.. Pacific J. Math., Tome 31 (1969) no. 3, pp. 681-698. http://gdmltest.u-ga.fr/item/1102983323/