@article{CMUC_1970__11_1_a8,
     author = {Dane\v{s}, Josef},
     title = {Generalized concentrative mappings and their fixed points},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {115--136},
     publisher = {mathdoc},
     volume = {11},
     number = {1},
     year = {1970},
     mrnumber = {0263063},
     zbl = {0195.14903},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1970__11_1_a8/}
}