%0 Journal Article %A Thomas, Glânffrwd P. %T A Generalization of a Construction Due to Robinson %J Canadian journal of mathematics %D 1976 %P 665-672 %V 28 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1976-067-1/ %R 10.4153/CJM-1976-067-1 %F 10_4153_CJM_1976_067_1