\input zb-basic \input zb-ioport \iteman{io-port 05947894} \itemau{Wang, Xue-Ru; Huang, Xue; Wang, Ji-Bo} \itemti{Single-machine scheduling with linear decreasing deterioration to minimize earliness penalties.} \itemso{Appl. Math. Modelling 35, No. 7, 3509-3515 (2011).} \itemab Summary: We consider a single-machine scheduling problem with linear decreasing deterioration in which the due dates are determined by the equal slack (SLK) method. By the linear decreasing deterioration, we mean that the job's processing time is a decreasing function of its starting time. The objective is to minimize the total weighted earliness penalty subject to no tardy jobs. We prove that two special cases of the problem remain polynomially solvable. The first case is the problem with equally weighted monotonous penalty objective function and the other case is the problem with weighted linear penalty objective function. \itemrv{~} \itemcc{} \itemut{scheduling; single-machine; deteriorating jobs; SLK due date} \itemli{doi:10.1016/j.apm.2011.01.005} \end