@InProceedings{Tsumaki:2000:APSEC,
  author =       "Toshihiko Tsumaki and Yoshitomi Morisawa",
  title =        "A Framework of Requirements Tracing using {UML}",
  booktitle =    "Proceedings of APSEC 2000",
  editor =       "N.N.",
  publisher =    "IEEE Computer Society",
  year =         "2000",
}