00546naa#a2200169#i#450# EN\\bibl\39144 20241227094219.5 2223-4608 20200915b2020####ek#y0engy0150####ca RU Modern ultrasonic dimensional technologies of hard-to-machine and composite material billet machining Journal article Bryansk Bryansk State Technical University 2020 6 с. Journal article local Физика. 53 Kiselev Evgeniy Stepanovich zh-szf.ru