@misc{acm-ernst-kaiser,
  title   = {{Ernst Kaiser}},
  author  = {Lengwiler, Martin and Leimgruber, Matthieu},
  year    = {2014},
  month   = {jun},
  url     = {https://www.historyofsocialsecurity.ch/articles/oik-stakeholders/gzw-history-of-social-security-civil-servants-and-specialists/acm-ernst-kaiser}
}