%0 Journal Article %A Rees, Rolf S. %A Stinson, Douglas R. %T Frames with Block Size Four %J Canadian journal of mathematics %D 1992 %P 1030-1049 %V 44 %N 5 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1992-063-x/ %R 10.4153/CJM-1992-063-x %F 10_4153_CJM_1992_063_x