@article{natureinspiredoptimizationalgorithms1,
  title = {Nature-Inspired Optimization Algorithms: Research Direction and Survey},
  author = {Sachan Rohit Kumar and Kushwaha Dharmender Singh},
  year = {2021},
  eprint = {2102.04013},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2102.04013v1},
}