@article{10_4064_cm_24_2_253_257,
     author = {W. Waliszewski},
     title = {On some operation on sets of mappings},
     journal = {Colloquium Mathematicum},
     pages = {253--257},
     publisher = {mathdoc},
     volume = {24},
     number = {2},
     year = {1971},
     doi = {10.4064/cm-24-2-253-257},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-24-2-253-257/}
}