@article{CMUC_1963_4_1_a2,
     author = {Cenkl, Bohumil},
     title = {On the local map of manifolds},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {15--28},
     year = {1963},
     volume = {4},
     number = {1},
     zbl = {0133.15302},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1963_4_1_a2/}
}