1. Aldrete C.J. Avitia R. and Oey H. S. (1992). “Utilizacion del Concepto de la Ingenieria del Valor en la Toma de Decisiones.” Edifica Chihuahua Mexico No. 28 23–25 (in Spanish).
2. “Building code requirements for reinforced concrete.” (1989). ACI318-89 American Concrete Institute Detroit Mich.
3. Griffis L. G. (1994). “Composite frame construction.” Modern Steel Constr. (Oct.) 36–47.
4. Hognestad E. N. (1951). “A study of combined bending and axial load in reinforced concrete members.” Bull. 399 (Nov.) Univ. of Illinois Urbana Ill.
5. Hognestad E. N. Hanson N. W. and McHenry D. (1955). “Concrete stress distribution in ultimate strength design.” J. Am. Concrete Inst. Vol. 52(Dec.).