The complete proof on the economic order quantity under conditions of permissible delay in payments. - Kun-Jen Chung; Shy-Der Lin; Ghi-Feng Yen (J. Oper. Res. Soc., 2008)

The optimal retailer's ordering policies with trade credit financing and limited storage capacity in the supply chain system. - Ghi-Feng Yen; Kun-Jen Chung; Tzung-Ching Chen (Int. J. Syst. Sci., 2012)