Erkip, N.

capacity remanufacturing level substitution capacity levels remanufacturing option substitution policy unit cost policy product option profit demand order-up-to level utilization ratio manufacturing requirement order-up-to capacity requirement problem capacity constraint value unit profit margin figure function inventory utilization remanufactured products unit capacity requirement system condition theorem opportunity cost effect model increase respect remanufactured order-up-to levels price property constraint ratio no-substitution table opportunity profit function proof margin study customer optimality decrease observation optimality conditions solution capacity level section demand /period system conditions profit improvement capacity restriction int j sr value unit cost advantage lemma theorem 2 behavior appendix result return salomon m inventory control control 0.00 market unconstrained problem period range profitability