@ARTICLE{BalBirStuYuaDor2009,
  author = {P. Balaprakash and M. Birattari and T. St\"utzle and Z. Yuan and M. Dorigo},
  title = {Estimation-based ant colony optimization and local search for the probabilistic traveling salesman problem},
  journal = {Swarm Intelligence},
  year = {2009},
  volume = {3},
  pages = {223--242},
  number = {3},
  publisher = {Springer Verlag}
}