1. NTCC-2004, Normas Técnicas Complementarias para Diseño y Construcción de Estructuras de Concreto. Gaceta Oficial del Distrito Federal. México; October, 2004 [in Spanish]
2. ACI-318-05, Building code requirements for structural concrete (ACI-318-05) and commentary (ACI 318R-05). Farmington Hills (Michigan, USA): American Concrete Institute; 2005
3. Shear strength of haunched beams without shear reinforcement;MacLeod;ACI Structural Journal,1994
4. Estructuras de concreto reforzado. Ninth printing of the first edition;Park,1997
5. Reinforced concrete: Mechanics and design;MacGregor,1997