@article{CMUC_1967__8_1_a5,
     author = {Pultr, Ale\v{s}},
     title = {On selecting of morphisms among all mappings between underlying sets of objects in concrete categories and realisations of these},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {53--83},
     publisher = {mathdoc},
     volume = {08},
     number = {1},
     year = {1967},
     mrnumber = {0210764},
     zbl = {0166.27502},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1967__8_1_a5/}
}