%0 Journal Article %A Dugald Macpherson %T Sharply multiply homogeneous permutations groups, and rational scale types. %J Forum mathematicum %D 1996 %P 501-508 %V 8 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/FORUM_1996__8_3_141781/ %F FORUM_1996__8_3_141781