@article{SLC_1997_39_a1,
     author = {Wolfgang M\"uller},
     title = {Group {Actions} on {Magic} {Squares}},
     journal = {S\'eminaire lotharingien de combinatoire},
     year = {1997},
     volume = {39},
     url = {http://geodesic.mathdoc.fr/item/SLC_1997_39_a1/}
}