@article{10_4064_cm131_1_8,
     author = {Aleksander B{\l}aszczyk and Anna Brzeska},
     title = {$P_{\lambda}$-sets and skeletal mappings},
     journal = {Colloquium Mathematicum},
     pages = {89--98},
     publisher = {mathdoc},
     volume = {131},
     number = {1},
     year = {2013},
     doi = {10.4064/cm131-1-8},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm131-1-8/}
}