@misc{wsv-walther-stampfli,
  title   = {{Walther Stampfli}},
  author  = {Leimgruber, Matthieu},
  year    = {2014},
  month   = {jun},
  url     = {https://www.historyofsocialsecurity.ch/articles/oik-stakeholders/vbt-history-of-social-security-federal-councilors/wsv-walther-stampfli}
}