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2. “On the CAD of Profiles for Cutters and Helical Flutes - Geometrical Aspects.”;Kaldor;Annals of CIRP,1988
3. Simon V., 1971, “Cutting of the Profile Sections of Cylindrical Tools for Processing Spiral Slots for Swarf.” Masinstvo, No. 2, pp. 296-303, (in Serbo-Chroatian).