@article{BradyGiesselmannKohleretal.2018,
  author    = {David Brady and Marco Giesselmann and Ulrich Kohler and Anke Radenacker},
  title     = {How to measure and proxy permanent income},
  journal   = {The Journal of Economic Inequality},
  series    = {evidence from Germany and the US},
  volume    = {16},
  number    = {3},
  pages     = {321 -- 345},
  doi       = {10.1007/s10888-017-9363-9},
  year      = {2018},
}