@article{MASLO_1995_45_3_a4,
     author = {Chajda, Ivan},
     title = {Some modifications of the congruence extension property},
     journal = {Mathematica slovaca},
     pages = {251--254},
     year = {1995},
     volume = {45},
     number = {3},
     mrnumber = {1361818},
     zbl = {0849.08004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1995_45_3_a4/}
}