%0 Journal Article %A Peter I. Booth %T Cancellation and non-cancellation amongst products of spherical fibrations. %J Mathematica Scandinavica %D 1990 %P 33-43 %V 66 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MS2_1990__66_1_167091/ %F MS2_1990__66_1_167091