%0 Journal Article %A Zhao, Jianqiang %T Variations of Mixed Hodge Structures of Multiple Polylogarithms %J Canadian journal of mathematics %D 2004 %P 1308-1338 %V 56 %N 6 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-2004-057-2/ %R 10.4153/CJM-2004-057-2 %F 10_4153_CJM_2004_057_2