@article{10_4064_cm_69_1_133_141,
     author = {E. Grace and E. Vought},
     title = {Four mapping problems of {Ma\'ckowiak}},
     journal = {Colloquium Mathematicum},
     pages = {133--141},
     publisher = {mathdoc},
     volume = {69},
     number = {1},
     year = {1996},
     doi = {10.4064/cm-69-1-133-141},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-69-1-133-141/}
}