European Commission: Expert Group on e-Invoicing

European EXPP Summit – ebilling , online invoicing , electronic e-Invoicing

European Commission: Electronic invoicing and storage of invoices for each country

European Commission: VAT Invoicing Rules

Electronic Simple European Networked Services (e-SENS)

European Commission: Digital Agenda for Europe.

CEN Workshop on eInvoicing

CEN e-invoice Gateway: Country related info about e-Invoicing

CEN e-invoice Gateway: Good Practice Guidelines May 2012

EU Commission e-Invoicing Standardisation – September 2012

Electronic Invoicing Platform, an initiative of the E-invoicing Trust Foundation

E-invoicing Toolbox, an initiative of the E-invoicing Trust Foundation

The European E-Invoicing Service Providers Association – EESPA

Euro Banking Association (EBA) E-Invoicing Working Group

Peppol eInvoicing – Pan-European Public Procurment On Line

Peppol eSignature – Pan-European Public Procurment On Line

E-invoicing Check List, an initiative of the E-invoicing Trust Foundation

European Commission – Information and communication technologies e-Invoicing

European Commission’s activities on e-Invoicing

European Commission’s Standardisation activities on e-invoicing

ETSI Electronic Signature

PwC’s VAT invoicing rules study

e-invoice-gateway

The e-invoicing blog

Network of Excellence APARSEN in the area of Digital Preservation

The Top 10 leading practices in electronic invoicing for 2012

OB10: the global e-Invoicing network across 150 Country

OB10 blog

OAIS (Open Archival Information System) Reference Model- CCSDS ISO 14721:2003

The Reference Model for an OAIS

Digital Preservation Europe

Digital Preservation Wikipedia

European Framework for Audit and Certification of Digital Repositories

Blog The Signal Digital Preservation – The Library of Congress

Summer School on Policies and Practices in Access to Digital Archives 2013

PDF/A Competence Center

InterPARES 2 Project

Common Criteria Portal

Forum of European Supervisory Authorities for Electronic Signatures (FESA)

Portal de Factura Electronica Gobierno de España

España Factura electrónica – El Centro de Cooperación Interbancaria (CCI)

UK e-Invoicing Advocacy Group

UK e-Invoicing Basics

NDSA National Digital Stewardship Alliance

Digital Preservation Coalition UK

Latin America e-Invoicing compliance

Brazil Nota Fiscal Eletrônica (NF-e)

Argentina Administración Federal – Factura Electrónica Comprobantes en Línea

Factura Electrónica Argentina Normativa Legal

Mexico Gobierno Federal – Comprobantes Fiscales Digitales a través de Internet (CFDI)

Mexico Gobierno Federal – Firma Electrónica Avanzada (FIEL)