@Article{yalta-yalta:2007,
  author={A. Talha Yalta and A. Yasemin Yalta},
  title={{GRETL} 1.6.0 and Its Numerical Accuracy},
  journal={Journal of Applied Econometrics},
  year=2007,
  volume={22},
  number={4},
  pages={849--854},
  url={http://onlinelibrary.wiley.com/doi/10.1002/jae.946/abstract}
}