@article{刘迎东_9, author = {[刘迎东]}, title = {常微分方程组的周期解}, publisher = {星空电竞app2026最新版学报}, year = {2004}, journal = {星空电竞app2026最新版学报}, volume = {28}, number = {6}, eid = {9}, pages = {9-1}, keywords = {常微分方程组;周期系统;上下解;生态模型}, url = https://jdxb.bjtu.edu.cn/CN/abstract/article_2048.shtml }