TI - Evaluation of reliability and performance in multi-subsystem serial system: Analyzing K-out-of-n redundancy in complex series-parallel configuration using Copula methodology AU - IBRAHIM, K.G. AU - YUSUF, I. AU - AYAGI, H.I. SO - Sigma Journal of Engineering and Natural Sciences 2026;44:1048-1068. DO - 10.14744/sigma.2026.2024