3Yu Ping, Kostas Kontogiannis, Terence C. Lau. Transforming Legacy Web Applications to the MVC Architecture[C]. The Eleventh Annual International Workshop on Software Technology and Engineering Practice. 2003: 133-142
4Ahmed Elfatatry, Paul Layzell. Software as A Service:A Negotiation Perspective[C]. Proceedings of the 26th Annual International Computer Software and Applications Conference, 2002 : 501-506
5Vidyanand Choudhary. Software as a Service: Implications for Investment in Software Development [C]. Proceedings of the 40th Hawaii International Conference on System Sciences, 2007 :209
