Filho, Benedito, Luís Bernardo, and Bernardo Horowitz. “Softened Variable Angle Truss Model (RA-STM): Model Description and Refinement/Optimization Proposals”. KnE Engineering 5, no. 5 (May 3, 2020): 36–48. Accessed October 1, 2020. https://knepublishing.com/index.php/KnE-Engineering/article/view/6909.