@misc{guj-introduction-of-the-residential-principle-in-social-welfare,
  title   = {{Introduction of the Residential Principle in Social Welfare}},
  author  = {},
  year    = {},
  month   = {},
  url     = {https://www.historyofsocialsecurity.ch/zeitstrahl/cww-expansion-and-consolidation-of-the-welfare-state/guj-introduction-of-the-residential-principle-in-social-welfare}
}