1. ASCE 7–05, Minimum Design Loads for Buildings and Other Structures 2005 American Society of Civil Engineers New York.
2. https://news.google.com/newspapers?id=DfxRAAAAIBAJ&sjid=QnQDAAAAIBAJ&pg=3564%2C493197.
3. https://api.parliament.uk/historic-hansard/written-answers/1966/nov/02/university-of-aberdeen-collapse-of#S5CV0735P0_19661102_CWA_110.
4. Public-safety issues in collapse of L'Ambiance Plaza;Heger;J Perform Constr Facil,1991
5. FEMA 403, World Trade Center Building Performance Study: Data Collection 2002 Preliminary Observation and Recommendation Federal Emergency Agency, Washington, D.C.