|  |  | 
| 2008 | ||
|---|---|---|
| 3 | EE | Il-Yeol Song, Ritu Khare, Yuan An, Margaret Hilsbos: A Multi-level Methodology for Developing UML Sequence Diagrams. ER 2008: 114-127 | 
| 2005 | ||
| 2 | EE | Margaret Hilsbos, Il-Yeol Song, Yoo Choi: A Comparative Analysis of Use Case Relationships. ER (Workshops) 2005: 53-62 | 
| 2004 | ||
| 1 | EE | Margaret Hilsbos, Il-Yeol Song: Use of Tabular Analysis Method to Construct UML Sequence Diagrams. ER 2004: 740-752 | 
| 1 | Yuan An | [3] | 
| 2 | Yoo Choi | [2] | 
| 3 | Ritu Khare | [3] | 
| 4 | Il-Yeol Song | [1] [2] [3] |