%0 Journal Article %A Borwein, J. M. %A Lewis, A. S. %T Decomposition of Multivariate Functions %J Canadian journal of mathematics %D 1992 %P 463-482 %V 44 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1992-030-9/ %R 10.4153/CJM-1992-030-9 %F 10_4153_CJM_1992_030_9