@article{Gott96a,
   author = {G.~Gottlob AND M.~Schrefl AND B.~R{\"o}ck},
   journal = {{ACM Transactions on Information Systems (ACM TOIS)}},
   number = {3},
   pages = {268--296},
   title = {{Extending Object-Oriented Systems with Roles}},
   volume = {14},
   year = {1996}
}
zurück