Operational Control as a Means of the Evaluation of Quality of Welded Connections for Flash-Butt Welding of Modern high-strength steels - S. I. Kuchuk-Yatsenko; P. M. Rudenko; V. S. Havrysh; O. V. Didkovskyi; Ye. V. Antipin; I. V. Ziakhor (Science and innovation, 2020)