@article{10_4064_cm_23_1_69_91,
     author = {A. Lelek},
     title = {Dimension inequalities for unions and mappings of separable metric spaces},
     journal = {Colloquium Mathematicum},
     pages = {69--91},
     publisher = {mathdoc},
     volume = {23},
     number = {1},
     year = {1971},
     doi = {10.4064/cm-23-1-69-91},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-23-1-69-91/}
}