@article{10_4064_fm_48_3_325_341,
     author = {J. S{\l}omi\'nski},
     title = {On the determining of the form of congruences in abstract algebras with equationally definable constant elements},
     journal = {Fundamenta Mathematicae},
     pages = {325--341},
     publisher = {mathdoc},
     volume = {48},
     number = {3},
     year = {1959},
     doi = {10.4064/fm-48-3-325-341},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-48-3-325-341/}
}