00568naa#a2200181#i#450# EN\INFRA-M\bibl\29918 20241116112340.6 2308-4898 20190815b2019####ek#y0engy0150####ca RUS RU A Geometrical Model Producing a Surface Equivalent To the Working Surface of the Gear Tool «Hob» Journal article Moscow INFRA-M Academic Publishing LLC. 2019 4 с. Journal article local Математика. 51 RUS Ryazanov S. A. naukaru.ru