@article{posegraphoptimizationforunsupervised,
  title = {Pose Graph Optimization for Unsupervised Monocular Visual Odometry},
  author = {Yang Li and Yoshitaka Ushiku and Tatsuya Harada},
  year = {2019},
  eprint = {1903.06315},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1903.06315v1},
}