@inproceedings{continuousrelaxationsfordiscrete,
  title = {Continuous Relaxations for Discrete Hamiltonian Monte Carlo},
  author = {Yichuan Zhang and Zoubin Ghahramani and Amos J. Storkey and Charles A. Sutton},
  year = {2012},
  booktitle = {NeurIPS 2012 12},
  url = {http://papers.nips.cc/paper/4652-continuous-relaxations-for-discrete-hamiltonian-monte-carlo},
}