@article{JRAM_1976__288_151795,
     author = {Gerd Blind},
     title = {r-zug\"angliche {Unterdeckungen} der {Ebene} durch kongruente {Kreise.} {I.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {1--23},
     year = {1976},
     volume = {288},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1976__288_151795/}
}