Kumar, S. ., 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”. Journal of Electrochemical Science and Engineering, vol. 12, no. 5, July 2022, pp. 877-88, doi:10.5599/jese.1228.