Optimal lot-sizing problem with imperfect maintenance and imperfect production. - Shey-Huei Sheu; Jih-An Chen (Int. J. Syst. Sci., 2004)

Optimal age-replacement policy for repairable products under renewing free-replacement warranty. - Yu-Hung Chien; Jih-An Chen (Int. J. Syst. Sci., 2007)

Renewing warranty and preventive maintenance for products with failure penalty post-warranty. - Jih-An Chen; Yu-Hung Chien (Qual. Reliab. Eng. Int., 2007)

Optimal spare ordering policy under a rebate warranty. - Yu-Hung Chien; Jih-An Chen (Eur. J. Oper. Res., 2008)