@article{cerulli2012exact,
  title={Exact and heuristic methods to maximize network lifetime in wireless sensor networks with adjustable sensing ranges},
  author={Cerulli, Raffaele and De Donato, R and Raiconi, Andrea},
  journal={European Journal of Operational Research},
  volume={220},
  number={1},
  pages={58--66},
  year={2012},
  publisher={Elsevier}
}