1. The Skyscraper Centre, The Global Tall Building Database of the CTBUH, http://skyscrapercenter.com/, last accessed 05 April 2012.
2. Society of Fire Protection Engineers, Guidelines for Designing Fire Safety in Very Tall Buildings, Public Review Draft, March 2012.
3. Federal Building and Fire Safety Investigation of the World Trade Center Disaster – Final Report of the National Construction Safety Team on the Collapses of the World Trade Center Towers, NIST, NIST NCSTAR 1, 2005.
4. Federal Building and Fire Safety Investigation of the World Trade Center Disaster – Final Report on the Collapse of World Trade Center Building 7, NIST, NIST NCSTAR 1A, Nov 2008.
5. Parker, D., 2005. Madrid Tower Designer Blames Missing Fire Protection for Collapse, New Civil Engineer.