, H. M. E. G. M. L. “Limits of Strength and Pre-Crack Theories in the Calculation of the Torsional and Flexural Resistance of Reinforced and Prestressed Concrete Cross Sections”. Hormigón Y Acero, Vol. 55, no. 231, Jan. 2004, http://www.hormigonyacero.com/index.php/ache/article/view/211.