1. CEN ORCHID workshop; www.cen.eu/go/ORCHID, 2010.
2. ISO 15288; System Life Cycle Processes, ISO, Geneva. 2008.
3. ISO 15926; Integration of lifecycle data for process plants including oil and gas production facilities, ISO, Geneva. 2010.
4. RENSSEN, A. VAN; Gellish, A generic extensible ontology language, Delft, 2005.
5. NIST Cost Analysis of Inadequate Interoperability in the U.S. Capital Facilities Industry, U.S. department of Commerce, Galthersburg, Maryland, 2002.