TY  - JOUR
AU  - Shoul, Abbas
AU  - yaghoubipoor, ali
AU  - abbaslo, laleh
TI  - Provide a multi-objective mathematical programming model for supplier selection in discounted status
JO  - Modiriat-e- farda
VL  - 18
IS  - 59
SP  - 19
EP  - 30
PY  - 2019
DO  - 
ER  -