@article{JRAM_1969__236_150937,
     author = {Gerd Blind},
     title = {\"Uber {Unterdeckungen} der {Ebene} durch {Kreise.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {145--173},
     publisher = {mathdoc},
     volume = {236},
     year = {1969},
     zbl = {0174.25502},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1969__236_150937/}
}