@article{10_4064_ba52_1_10,
     author = {Dorota Dudek and Wies{\l}aw Zi\k{e}ba},
     title = {On {Multivalued} {Amarts}},
     journal = {Bulletin of the Polish Academy of Sciences. Mathematics},
     pages = {93--99},
     publisher = {mathdoc},
     volume = {52},
     number = {1},
     year = {2004},
     doi = {10.4064/ba52-1-10},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ba52-1-10/}
}