@misc{johann-jakob-kummer,
  title   = {Johann Jakob Kummer},
  author  = {Lengwiler, Martin},
  year    = {2014},
  month   = {jun},
  url     = {https://www.historyofsocialsecurity.ch/articles/stakeholders/history-of-social-security-civil-servants-and-specialists/johann-jakob-kummer}
}