1. AISC. (2009). “Utilizing CIS/2 interoperability.” ⟨http://www.aisc.org/content.aspx?id=17574&terms=cis*⟩ (Jan. 26 2009).
2. Amor R. (2006). “Preservation of meaning in mapped IFCs.” Proc. EC-PPM 2006 Valencia Spain 233–236.
3. Synthesizing third normal form relations from functional dependencies
4. buildingSMART. (2007). “A selection of IFC2x3 test cases.” ⟨http://www.iai.hm.edu/how-to-implement-ifc/certification/test-cases/ifc2x3-coordination-view/building-elements⟩ (Jul. 13 2009).
5. buildingSMART. (2009a). “Industry foundation classes.” ⟨http://buildingsmart.com/bim⟩ (Jun. 19 2009).