S. P. Keeler, Circular grid system – a valuable aid for evaluating sheet metal formability, SAE Technical Paper, 77 (1968) 371–379.
 G. M. Goodwin, Application of strain analysis to sheet metal forming problems in press shop, SAE Transactions, 77 (1968) 380–387.
 S. L. Semiatin, H. R. Piehler, Formability of sandwich sheet materials in plane strain compression and rolling, Metallurgical Transactions A, 10 (1979), 97–107.
 S. L. Semiatin, H. R. Piehler, Deformation of sandwich sheet materials in uniaxial tension, Metallurgical Transactions A, 10 (1979) 85–96.
 T. Mori, S. Kurimoto, Press-formability of stainless steel and aluminum clad sheet, Journal of Materials Processing Technology, 56 (1996) 242–253.
 F. Yoshida, R. Hino, Forming limit of stainless steel-clad aluminum sheets under plane stress condition, Journal of Materials Processing Technology, 63 (1997) 66–71.
 -A. Jalali Aghchai, M. Shakeri, B. Mollaei Dariani, Theoretical and experimental formability study of two-layer metallic sheet Al1100/St12, Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering manufacture, 222 (9) (2008) 1131–1138.
 -A.Jalali Aghchai, M. Shakeri, B. Mollaei Dariani, Influences of material properties of components on formability of two-layer metallic sheets, International Journal of Advanced Manufacturing Technoloogy, 66 (2012) 809–823.
 Z. Marciniak, K. Kuczynski, Limit strains in the processes of stretch-forming sheet metal, International Journal of Mechanical Sciences, 9 (1967) 609–620.
 J.Z. Gronostajski, Z. Zimniak, Theoretical simulation of sheet behavior in forming processes, Journal of Materials Processing Technology, 34 (1992) 457–464.
 M. Shakeri, A. Sadough, B.M. Dariani, Theoretical and Experimental Analysis of Sheet Metal Formability Limit, Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering manufacture, 214 (2000) 821–827.
 -A.Assempour, M. Nurcheshmeh, The influence of material properties on the shape and level of the forming limit diagram, SAE Technical Paper, 01 (2003) 1149.
 R. Hill, Theoretical plasticity of textured aggregates, Mathematical Proceedings of the Cambridge Philosophical Society, 85 (1979) 179–620.
 M. Pishbin, P.P. Gillis, Forming limit diagrams calculated using Hill’s non-quadratic yield criterion Metallurgical Transactions A, 23 (1992) 1992-2817.
 J. Gronostajski, The effect of strain path on the plastic instability, Proceedings of the 3rd International Conference on the Technology of Plasticity, Kyoto, Japan, (1990), Vol. 3, 49-50.
 S. S. Hecker, A cup test for assessing stretchability, Metals Engineering Quarterly, 14, (1974), 30-36.
 S. Storen, J.R. Rice, Localized necking in thin sheets, Journal of the Mechanics and Physics of Solids, 23 (1975) 421-441.
 -A.Petek, T. Pepelnjak, K. Kuzman, An improved method for determining forming limit diagram in digital environment, Journal of Mechanical Engineering, 51 (2005) 330-345.
 T. Pepelnjak, A. Petek, K. Kuzman, Analysis of the forming limit diagram in digital environmrnt, Advanced Material Research, 6-8 (2005) 697-704.
 M.G. Cockcroft, D.J. Latham, Ductility and the Workability of Metals, Journal of the Institute of Metals, 96 (1968) 33–39.
 S. I. Oh, C. C. Chen, S. Kobayashi, Ductile Fracture in Axisymmetric Extrusion and Drawing, Journal of Engineering for Industry-Transactions of the ASME, 101 (1979) 36-44.
 P. Brozzo, B. Deluca, R. Rendina, A New Method for the Prediction of Formability in Metal Sheets, Proceedings of the Seventh Biennial Conference of IDDRG on Sheet Metal Forming and Formability, (1972).