@inproceedings{Fister2015ParameterFreeBat,
  title={Towards the development of a parameter-free bat algorithm},
  author={Fister Jr, Iztok and Fister, Iztok and Yang, Xin-She},
  booktitle={StuCoSReC : proceedings of the 2015 2nd Student Computer Science Research Conference. Koper: University of Primorska},
  pages={31--34},
  year={2015}
}