Dan N. DOBRESCU - Computer stamps catalog, AXA Publishing House 2011 (electronic format) / 2020 (printing format)   Stamps and new technologies     Wobbe VEGTER - Cyber Philately   Johann VANDENHAUTE - Computers     Vito GALGANO - Computer related stamps - a topical collection   Dan N. DOBRESCU - Computer stamps (catalog)     Mathematics and computation I - IV   Dan N. DOBRESCU - Communication through a computer     Michel LANDRIEU - Informatique et télécommunications   Fédération des Equipes BULL     Letter mail mechanization   Postage ATM stamps     J. CURA - Filatelica e Informatica   Delcampe philately computer topics - on line auctions     Virtual Stamp Club