Kaldashev, Tsvetan, Petar Hadzhiyski, and Galina Nikolcheva. 2017. “STUDY WEAR TOOL WITH HIGH-SPEED MILLING”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 3 (June): 117-21. https://doi.org/10.17770/etr2017vol3.2598.