
http://www.kavalacapital.com/content/20201201-Rapport_ecommerce.pdf

https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef20003en.pdf

https://www.ilo.org/wcmsp5/groups/public/—dgreports/—cabinet/documents/publication/wcms_662442.pdf