@article{safeexplorationinmarkovdecisionprocesses,
  title = {Safe Exploration in Markov Decision Processes with Time-Variant Safety using Spatio-Temporal Gaussian Process},
  author = {Akifumi Wachi and Hiroshi Kajino and Asim Munawar},
  year = {2018},
  eprint = {1809.04232},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1809.04232v1},
}