@misc{GaoMartin2021,
  author    = {Can Gao and Ian Martin},
  title     = {Volatility, valuation ratios, and bubbles: an empirical measure of market sentiment},
  booktitle = {SAFE working paper ; No. 312},
  number    = {January, 2021},
  doi       = {10.2139/ssrn.3810730},
  institution = {Wirtschaftswissenschaften},
  series    = {SAFE working paper},
  number    = {312},
  type      = {workingpaper},
  pages     = {69},
  year        = {2021},
}