1. Apparatus of the End Type for Obtaining Erosion Plasma Jets: USSR Inventor's Certificate No. 915772; MKI3N 05 N 1/24.
2. V. V. Astashinskii and L. Ya. Min'ko, Izv. Akad. Nauk Bel. SSR, Ser. Fiz. Mat. Nauk, No. 4, 60 (1985).
3. Apparatus of the End Type for Obtaining Erosion Plasma Jets: USSR Inventor's Certificate No. 1565333, MKI5 N 05 N 1/14.