@article{proper1995evolution,
   author = {Proper, Henderik A. and van der Weide, Theo P.},
   doi = {10.1109/69.476503},
   journal = {{IEEE} Transactions on Knowledge and Data Engineering},
   month = {December},
   number = {6},
   pages = {984--996},
   title = {A General Theory for Evolving Application Models},
   volume = {7},
   year = {1995},
}