@article{AUPO_2002_41_1_a12,
     author = {Skiba, Robert},
     title = {Topological essentiality for multivalued weighted mappings},
     journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica},
     pages = {131--145},
     year = {2002},
     volume = {41},
     number = {1},
     mrnumber = {1968226},
     zbl = {1074.47024},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUPO_2002_41_1_a12/}
}