%0 Journal Article %A Helminck, Aloysius G. %A Schwarz, Gerald W. %T Smoothness of Quotients Associated With a Pair of Commuting Involutions %J Canadian journal of mathematics %D 2004 %P 945-962 %V 56 %N 5 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-2004-043-7/ %R 10.4153/CJM-2004-043-7 %F 10_4153_CJM_2004_043_7