@misc{btx-independants,
  title   = {{Indépendants}},
  author  = {},
  year    = {},
  month   = {},
  url     = {https://www.histoiredelasecuritesociale.ch/artikel/nme-les-protagonistes/ecb-histoire-de-la-securite-sociale-profils-de-beneficiaires/btx-independants}
}