@article{Rodriguez-Mier12_ijwsr,
  title={An Optimal and Complete Algorithm for Automatic Web Service Composition},
  author={P. Rodr\'{\i}guez-Mier and M. Mucientes and J.C. Vidal and M. Lama},
  journal={International Journal of Web Services Research},
  volume={9},
  number={2},
  pages={1-20},
  year={2012}
}