作者：
CHEN; Yong-ming; YANG; Han Department; of; computation; Science; Chengdu; University; of; Information; Teehnologv; Chengdu; 610225; China; Department; of; Mathematics; Southwest; Jiaotong; University; Chengdu; 610031; China
非线性四阶波动方程
整体解
存在性
galerkin法
