Yin Wei. Synthesis and Characterization of Mesoprous Europium ( III ) Silicate Molecular Sieves[EB/OL]. Beijing:Sciencepaper Online[2005-04-25]. http://www.paper.edu.cn/releasepaper/content/200504-141. 此文件来自 中国科技论文在线 请勿作用于商业用途!