Non-linear analysis of a reinforced concrete sheet cover (umbrella) of 40m diameter by the finite element method. - J. J. del Coz Díaz; L. Peñalver Lamarca; P. J. García Nieto; Alfonso Lozano Martínez-Luengas; J. A. Vilán Vilán (Appl. Math. Comput., 2007)