@article{whythefireflyalgorithmworks,
  title = {Why the Firefly Algorithm Works?},
  author = {Xin-She Yang and Xingshi He},
  year = {2018},
  eprint = {1806.01632},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1806.01632v1},
}