Lopata, L., Lopata, A., Kachynska, I., Rybak, I., Solovykh, A. and Katerinich, S. 2026. Hardening protective coatings on niobium alloys, their thermal-cyclic creep and long-term strength. Problems of Tribology. 31, 2/120 (May 2026), 66–75. DOI:https://doi.org/10.31891/2079-1372-2026-120-2-66-75.