@article{unsupervisedlearningforrealworldsuper,
  title = {Unsupervised Learning for Real-World Super-Resolution},
  author = {Andreas Lugmayr and Martin Danelljan and Radu Timofte},
  year = {2019},
  eprint = {1909.09629},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1909.09629v1},
}