Park, Jaehun, Yong Soo Kim, Suk Joo Bae, Sung Kyu Kim, Mi Lim Lee, and Si-Il Sung. 2019. “Implementation of Prognostics and Health Management in South Korean Defense Systems”. International Journal of Industrial Engineering: Theory, Applications and Practice 26 (1). https://doi.org/10.23055/ijietap.2019.26.1.3606.