@article{516,
  author = {Kai Petersen and Cigdem Gencel and Negin Asghari and Stefanie Betz},
  title = {An elicitation instrument for operationalising GQM+ Strategies (GQM+ S-EI)},
  year = {2015},
  booktitle = {Empirical Software Engineering},
  journal = {Empirical Software Engineering},
  volume = {20},
  number = {4},
  pages = {968-1005},
  publisher = {Springer US},
}