Electrical characteristics of thermobaric sintered cBN–NbN composite - Yu. Yu. Rumiantseva; L. O. Romanko; D. V. Chasnyk; V. Z. Turkevych; V. M. Bushlia; I. P. Fesenko; O. M. Kaidash; V. I. Chasnyk; V. P. Rukin (Superhard Materials, 2020)