@article{556,
  author = {Muhammad Usman and Jürgen Börstler and Kai Petersen},
  title = {An effort estimation taxonomy for agile software development},
  year = {2017},
  booktitle = {International Journal of Software Engineering and Knowledge Engineering},
  journal = {International Journal of Software Engineering and Knowledge Engineering},
  volume = {27},
  number = {04},
  pages = {641-674},
  publisher = {World Scientific Publishing Company},
}