@article{robustcalibrationandarbitragefree,
  title = {Robust calibration and arbitrage-free interpolation of SSVI slices},
  author = {Pierre Cohort and Jacopo Corbetta and Claude Martini and Ismail Laachir},
  year = {2018},
  eprint = {1804.04924},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1804.04924v2},
}