@article{directionfindingbasedonmultistep,
  title = {Direction Finding Based on Multi-Step Knowledge-Aided Iterative Conjugate Gradient Algorithms},
  author = {S. Pinto and R. C. de Lamare},
  year = {2018},
  eprint = {1812.07505},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1812.07505v1},
}