Schäfer, M., Verbaere, M., Ekman, T., Moor, O., & Drossopoulou, S. (2009). Stepping Stones over the Refactoring Rubicon. Springer.

Schäfer, M., M. Verbaere, T. Ekman, O. Moor, and S. Drossopoulou. Stepping Stones over the Refactoring Rubicon. Springer, 2009.

Schäfer, M., et al. Stepping Stones over the Refactoring Rubicon. Springer, 2009.