@misc{expansion-of-social-security-in-europe,
  title   = {Expansion of Social Security in Europe},
  author  = {Germann, Urs},
  year    = {2014},
  month   = {jun},
  url     = {https://www.historyofsocialsecurity.ch/timeline/expansion-and-consolidation-of-the-welfare-state/expansion-of-social-security-in-europe}
}