Попов, А. Ю., and В. А. Прокофьев. “Improving the Accuracy of Processing Deep Holes by Electrical Discharge Machining With a Rotating Tubular Electrode”. Omsk Scientific Bulletin, no. 1(185), Feb. 2023, pp. 5-9, doi:10.25206/1813-8225-2023-185-5-9.