%0 Journal Article %T Preparation of geopolymer precursors by sol–gel method and their characterization %A Zheng, Guangjian %A Cui, Xuemin %A Zhang, Weipeng %A Tong, Zhangfa %J Journal of Materials Science %V 44 %N 15 %P 3991-3996 %@ 0022-2461 %D 2009-05-26 %I Springer US %~ DeepDyve