@misc{the-three-pillar-principle-becomes-enshrined-in-the-federal-constitution,
  title   = {The Three-Pillar Principle Becomes Enshrined in the Federal Constitution},
  author  = {Germann, Urs and Stüdli, Beat},
  year    = {2016},
  month   = {jun},
  url     = {https://www.historyofsocialsecurity.ch/timeline/expansion-and-consolidation-of-the-welfare-state/the-three-pillar-principle-becomes-enshrined-in-the-federal-constitution}
}