1. International Standards Organization, ISO 10303-1. Industrial automation systems and integration—product data representation and exchange—part 1: overview and fundamental principles. 1994.
2. International Standards Organization, ISO 10303-203. Industrial automation systems and integration—product data and exchange—part 203: application protocol: configuration controlled 3D designs of mechanical parts and assemblies. 1994.
3. International Standards Organization, ISO 10303-21. Industrial automation systems and integration—product data representation and exchange—part 21: implementation methods: clear text encoding of the exchange structure. 2002.
4. International Standards Organization, ISO 6983/1. Numerical control of machines—program format and definition of address words—part 1: data format for positioning, line and contouring control systems, 1st ed. 1982.
5. International Standards Organization, ISO 14649-1. Data model for computerized numerical controllers: part 1—overview and fundamental principles. 2003.