@article{HirschfeldPerscheidHaupt2012,
  author    = {Robert Hirschfeld and Michael Perscheid and Michael Haupt},
  title     = {Explicit use-case representation in object-oriented programming languages},
  journal   = {ACM SIGPLAN notices},
  volume    = {47},
  number    = {2},
  pages     = {51 -- 60},
  doi       = {10.1145/2168696.2047856},
  year      = {2012},
}