Trojanova, Z., and P. Lukac. “Deformation Mechanisms Operating During Plastic Flow of An Az63 Magnesium Alloy Studied by the Stress Relaxation Technique”. Communications - Scientific Letters of the University of Zilina, Vol. 12, no. 4, Dec. 2010, pp. 5-11, http://journals.uniza.sk/index.php/communications/article/view/958.