1. Ford Motor Company, 2.1 Determining Record Type Global Information Standards 1 (GIS1) USA, 1999.
2. PDES, Inc., Letter from the President and Chairman of the Executive Board, PDES, Inc. Program Annual Report, 1997,//pdesinc.scra.org/.
3. PDES, Inc., Proceedings of Product Data Archival and STEP Workshop. USA, 27–28 April 1995.
4. ISO TC184/SC4/WG3 N765, ISO/DIS 10303-214:1999, Product data representation and exchange: application protocol: core data for automotive mechanical design processes, Clause 6, Geneva, Switzerland, 1999. p. 2342–2357.