O. Zienkiewicz, G. Huang, Y. Liu. Adaptive FEM computation of forming processes—Application to porous and non-porous materials. Int. J. Numer. Meth. Engng. 30(8) DOI 10.1002/nme.1620300812
E. Oñate, C. Agelet de Saracibar. Numerical Modelling of Sheet-Metal-Forming Problems. DOI 10.1007/978-1-4471-1745-2_13
Z. Zhang, S. Hu. Mathematical Modeling in Plane Strain Bending. (1997) DOI 10.4271/970439