李正良,税国辉,冯翼然.复杂体型筒体结构的变分解法[J].土木与环境工程学报(中英文),1991,13(4). Li Zhenqliang Shui Guohui Feng Yiran. VARIATIONAL METHOD TO TUBE STRUCTURES OF COMPLICATED SHAPE[J]. JOURNAL OF CIVIL AND ENVIRONMENTAL ENGINEERING,1991,13(4).10.11835/j. issn.1674-4764.1991.04.007