@article{DMGAA_2002_22_2_a2,
     author = {Chajda, Ivan and Hala\v{s}, Radom{\'\i}r},
     title = {Congruence submodularity},
     journal = {Discussiones Mathematicae. General Algebra and Applications},
     pages = {131--139},
     publisher = {mathdoc},
     volume = {22},
     number = {2},
     year = {2002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGAA_2002_22_2_a2/}
}