- Publications, reports, presentations and articles (billentis.com)
- Documentation eInvoicing (europa.eu)
- eInvoicing (europa.eu)
- eInvoicing Country Factsheets for each Member State and other countries (europa.eu)
- What is eInvoicing (europa.eu)
- Types of digital invoices (europa.eu)
- European legislation on eInvoicing (europa.eu)
- Processing electronic invoices (europa.eu)
- Transmitting electronic invoices (europa.eu)
- eDelivery (europa.eu)
- eID (europa.eu)
- Directive 2014/55/EU on electronic invoicing in public procurement EUR-Lex - 32014L0055 - EN - EUR-Lex (europa.eu)
- A Europe fit for the digital age | European Commission (europa.eu)
- The Digital Europe Programme | Shaping Europe’s digital future (europa.eu)
- ICC Practice Principles for implementation of Continuous Transaction Controls
