×
模态框（Modal）标题
在这里添加一些文本
Close
Close
Submit
Cancel
Confirm
×
模态框（Modal）标题
×
Toggle navigation
Home
About Journal
Ethics Statement
Archive
Editorial Board
Contact Us
中文
The Structure and Determination of the Set of Reversible Edges in a Directed Acyclic Graph
XU Jing,ZHENG Zhongguo
Acta Scientiarum Naturalium Universitatis Pekinensis . 2003, (
1
): 6 -13 .
