@article{Wilking07,
  author    = {Dirk Wilking and Umar Farooq Kahn and Stefan Kowalewski},
  title     = {{An Empirical Evaluation of Refactoring}},
  journal   = {{e-Informatica Software Engineering Journal}},
  volume    = {1},
  number    = {1},
  year      = {2007},
  pages     = {27--42},
  ee        = {http://www.e-informatyka.pl/e-Informatica/attach/Issue1/Vol1Iss1Art2eInformatica.pdf},
}