[1]
R. C. Coates, M. G. Coutie, and F. K. Kong, Structural analysis, 3rd ed. London: Chapman and Hall, 1990.
[2]
J. M. Gere and B. Goodno, Mechanics of materials, 8th ed., SI version. Stamford, Conn: Cengage Learning, 2013 [Online]. Available: https://www.dawsonera.com/guard/protected/dawson.jsp?name=https://idp.bris.ac.uk/shibboleth&dest=http://www.dawsonera.com/depp/reader/protected/external/AbstractView/S9781408088845
[3]
F. P. Beer and S. Sanghi, Mechanics of materials, 6th ed., Global ed. New York: McGraw-Hill, 2012.
[4]
R. C. Hibbeler, Structural analysis, Ninth edition. Boston, Massachusetts: Pearson, 2015.
[5]
R. C. Hibbeler and S. C. Fan, Mechanics of materials, 8th ed. in SI units. Singapore: Prentice Hall, 2011.
[6]
G. F. Blackledge and Cement and Concrete Association, Concrete practice, 2nd ed., vol. Cement and Concrete Association publication. Slough: Cement and Concrete Association, 1987.