%0 Journal Article %A Dieter Jungnickel %A Thomas Beth %T Variations on seven points: An introduction to the scope and methods of coding theory and finite geometries. %J Aequationes mathematicae %D 1982 %P 153-176 %V 25 %I mathdoc %U http://geodesic.mathdoc.fr/item/AM2_1982__25_136961/ %F AM2_1982__25_136961