%0 Journal Article %A Mieczysław Borowiecki %T A characterization of middle graphs and a matroid associated with middle graphs of hypergraphs %J Fundamenta Mathematicae %D 1983 %P 1-4 %V 117 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-117-1-1-4/ %R 10.4064/fm-117-1-1-4 %G en %F 10_4064_fm_117_1_1_4