@article{BAG_1987__25_138383,
     author = {G. Wengerodt and K. Kirchner},
     title = {Die dichteste {Packung} von 36 {Kreisen} in einem {Quadrat}},
     journal = {Beitr\"age zur Algebra und Geometrie},
     pages = {147--160},
     publisher = {mathdoc},
     volume = {25},
     year = {1987},
     zbl = {0647.52002},
     url = {http://geodesic.mathdoc.fr/item/BAG_1987__25_138383/}
}