@article{sequentialdesignforoptimalstopping,
  title = {Sequential Design for Optimal Stopping Problems},
  author = {Robert B. Gramacy and Mike Ludkovski},
  year = {2013},
  eprint = {1309.3832},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1309.3832v2},
}