@article{10_14708_ma_v42i2_597,
     author = {Krzysztof J. Szajowski},
     title = {An apartment problem},
     journal = {Mathematica Applicanda},
     pages = { 193--206},
     publisher = {mathdoc},
     volume = {42},
     number = {2},
     year = {2014},
     doi = {10.14708/ma.v42i2.597},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/ma.v42i2.597/}
}