Herold, FlorianFlorianHerold2019-09-192013-01-1420120002-8282https://fis.uni-bamberg.de/handle/uniba/787engCarrot or Stick: The Evolution of Reciprocal Preferences in a Haystack Modelarticle10.1257/aer.102.2.914https://www.aeaweb.org/articles?id=10.1257/aer.102.2.914