TY - JOUR AU - Mirzaei, M. AU - Kordrostami, S. AU - Amirteimoori, AR. AU - G. Chegini, M. TI - A Method for Calculating the Marginal Rate in the FDH Model JO - International Journal of Industrial Mathematics VL - 11 IS - 1 SP - 55 EP - 62 PY - 2019 DO - ER -