Computation and profit analysis of a k-out-of-n:G repairable system under N-policy with multiple vacations and one replaceable repair facilityWenqing Wu, Yinghui Tang, Miaomiao Yu and Ying JiangRAIRO-Oper. Res., 49 4 (2015) 717-734DOI: https://doi.org/10.1051/ro/2015001