1. Kalinichenko, N.P., Kalinichenko, A.N., and Konareva, I.S., RF Patent 2426110, 2011
2. Kozin, E.G., USSR Inventor’s Certificate no. 266331, Byull. Izobret., 1970.
3. Nerazrushayushchii kontrol’ (Spravochnik) (Nondestructive Testing: Handbook), Klyuev, V.V., Ed., vol. 4., book 3: Kapillyarnyi kontrol’ (Penetrant Testing), Moscow: Mashinostroenie, 2006.
4. Kalinichenko, N.P., Kalinichenko, A.N., and Kuleshov, V.K., Kontrol’ pronikayushchimi veshchestvami. Kapillyarnyi kontrol’: uchebnoe posobie (Inspection by Penetrating Compounds. Penetrant Testing: Textbook), Tomsk: Izd. Tomsk. Politekhn. Univ., 2007.
5. GOST (State Standard) 23349-84: Nondestructive Testing. Penetrant Flaw Detectors. General Technical Requirements and Test Methods, 1984.