@article{ELMA_1982__37_141292,
     author = {Peter L\"auchli},
     title = {Das {Gitterspiel.}},
     journal = {Elemente der Mathematik},
     pages = {109--113},
     year = {1982},
     volume = {37},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1982__37_141292/}
}