@article{castan͂eda2016generalized,
  title={Generalized Symmetry Breaking Tasks and Nondeterminism in Concurrent Objects},
  author={Castan͂eda, Armando and Imbs, Damien and Rajsbaum, Sergio and Raynal, Michel},
  journal={SIAM Journal on Computing},
  volume={45},
  number={2},
  pages={379--414},
  year={2016},
  publisher={SIAM}
}