%0 Journal Article %A C.J. Colbourn %A Douglas R. Stinson %T Edge-coloured designs with block size four. %J Aequationes mathematicae %D 1988 %P 230-245 %V 36 %N 2-3 %I mathdoc %U http://geodesic.mathdoc.fr/item/AM2_1988__36_2-3_137286/ %F AM2_1988__36_2-3_137286