@article{10_4153_CJM_2004_057_2,
     author = {Zhao, Jianqiang},
     title = {Variations of {Mixed} {Hodge} {Structures} of {Multiple} {Polylogarithms}},
     journal = {Canadian journal of mathematics},
     pages = {1308--1338},
     year = {2004},
     volume = {56},
     number = {6},
     doi = {10.4153/CJM-2004-057-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2004-057-2/}
}