9Jeffrey K.H.Mak,Precise Modeling of Design Patterns in UML.Proseeding of the 26th International Conference on Software Engineering(ICSE2004):101-120.
10Neelam Soundarajan and Jason D.Hallstrom,Responsibilites and Rrewards:Specifying Design Patterns.Proseeding of the 26th International Conference on Software Engineering(ICSE2004).