ISO/IEC 10166-1:1991

Information technology - Text and office systems - Document Filing and Retrieval (DFR) - Part 1: Abstract service definition and procedures

ISO/IEC 9066-1:1989

Information processing systems - Text communication - Reliable Transfer - Part 1: Model and service definition

ISO/IEC 9066-2:1989

Information processing systems - Text communication - Reliable Transfer - Part 2: Protocol specification