Alexandrov, S., and E. Liamina. “Application of a Non - Local Criterion to Fracture Prediction in Plane – Strain Drawing”. Advanced Technologies and Materials, vol. 30, no. 1-2, Dec. 2005, pp. 53-59, https://jged.uns.ac.rs/index.php/atm/article/view/jtp.2005.30.1-2.5.