S. . Kumar, R. Bhatia, H. Singh, and R. L. . Virdi, “Microstructural and mechanical properties of CNT-reinforced ZrO2-Y2O3 coated boiler tube steel T-91: Original scientific paper”, J. Electrochem. Sci. Eng., vol. 12, no. 5, pp. 877–888, Jul. 2022.