Deželak, M., A. Stepišnik, and M. Ficko. “Experimental and Numerical Approaches to Improve Springback Prediction and Compensation”. Advanced Technologies and Materials, vol. 38, no. 1, June 2013, pp. 13-21, http://sp.ftn.uns.ac.rs/index.php/atm/article/view/JTP.2013.38.1.2.