Santiago Comella-Dorda Kurt C. Wallnau Robert C. Seacord John E. Robert A Survey of Black-Box Modernization Approaches for Information Systems. 173-183 2000 ICSM http://doi.ieeecomputersociety.org/10.1109/ICSM.2000.883039 db/conf/icsm/icsm2000.html#Comella-DordaWSR00