https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef22040en.pdf
https://euagenda.eu/upload/publications/untitled-111339-ea.pdf
https://www.resolutionfoundation.org/app/uploads/2020/01/Dead-end-relationship.pdf
https://www.boeckler.de/pdf/v_2018_04_26_27_arg_co_determ.pdf