@article{10_4064_fm_127_2_101_125,
     author = {Witold Rosicki},
     title = {On a problem of {S.} {Ulam} concerning {Cartesian} squares of 2-dimensional polyhedra},
     journal = {Fundamenta Mathematicae},
     pages = {101--125},
     publisher = {mathdoc},
     volume = {127},
     number = {2},
     year = {1987},
     doi = {10.4064/fm-127-2-101-125},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-127-2-101-125/}
}