Information technology - Open Systems Interconnection - Part 1: Basic Reference Model: The Basic Model (ISO/IEC 7498-1:1994); English version EN ISO/IEC 7498-1:1995
Informationstechnik - Kommunikation Offener Systeme - Teil 1: Basis-Referenzmodell: Basismodell (ISO/IEC 7498-1:1994); Englische Fassung EN ISO/IEC 7498-1:1995