Proposing metrics of difficulty of domain knowledge using usecase diagrams.

Akira Osada Daigo Ozawa Naoyuki Kitazawa Haruhiko Kaiya Kenji Kaijiri Proposing metrics of difficulty of domain knowledge using usecase diagrams. 624-629 2008 SAC http://doi.acm.org/10.1145/1363686.1363837 conf/sac/2008 db/conf/sac/sac2008.html#OsadaOKKK08