@article{fireflyalgorithmrecentadvancesand,
  title = {Firefly Algorithm: Recent Advances and Applications},
  author = {Xin-She Yang and Xing-Shi He},
  year = {2013},
  eprint = {1308.3898},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1308.3898v1},
}