%0 Journal Article %A VetchĂ˝, VladimĂ­r %T Metrically regular square of metrically regular bigraphs. II. %J Archivum mathematicum %D 1992 %P 17-24 %V 28 %N 1-2 %I mathdoc %U http://geodesic.mathdoc.fr/item/ARM_1992__28_1-2_a3/ %G en %F ARM_1992__28_1-2_a3