@article{MAN_1955__129_160426,
     author = {K. Sch\"utte},
     title = {\"Uberdeckungen der {Kugel} mit h\"ochstens acht {Kreisen.}},
     journal = {Mathematische Annalen},
     pages = {181--186},
     year = {1955},
     volume = {129},
     zbl = {0066.14403},
     url = {http://geodesic.mathdoc.fr/item/MAN_1955__129_160426/}
}