@article{CMUC_1968__9_4_a17,
     author = {Kol\'a\v{r}, Ivan},
     title = {On extended connections},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {687--690},
     publisher = {mathdoc},
     volume = {09},
     number = {4},
     year = {1968},
     mrnumber = {0246217},
     zbl = {0174.25003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1968__9_4_a17/}
}