Eduardo Kessler Piveta Ana Moreira Marcelo Soares Pimenta João Araújo Pedro Guerreiro Roberto Tom Price Ranking Refactoring Patterns Using the Analytical Hierarchy Process. 195-200 2008 ICEIS (3-2) conf/iceis/2008-3-2 db/conf/iceis/iceis2008-3-2.html#PivetaMPAGP08