Machev, Velichko, and Viktor Georgiev. 2026. “NON-DESTRUCTIVE EVALUATION OF ION-NITRIDED AND CARBONITRIDED LAYERS ON BH11 AND D2 TOOL STEELS: EDDY CURRENT TESTING AND BARKHAUSEN NOISE METHODS”. Proceedings of the International Conference on Secure Systems Design and Technology Development 2 (September): 173-76. https://doi.org/10.68302/std2026.vol2.143.