Jindal, A., and K. S. Sangwan. 2014. “Closed loop supply chain network design and optimisation using fuzzy mixed integer linear programming model.” International Journal of Production Research 52(14); 4156-4173.
We would like to draw attention towards following errors in above mentioned paper:
On page 4171, it reads:
= 0.4 *0.78 = 0.311
= 0.4*0.78 = 0.351
= 0.4*0.78 = 0.373
= 0.4*0.78 = 0.381
= 0.4*0.78 = 0.370
= 0.4*0.78 = 0.346
= 0.4*0.78 = 0.310
However, it should be corrected as:
= 0.4 *0.78 = 0.311
= 0.5*0.70 = 0.351
= 0.6*0.62 = 0.373
= 0.7*0.54 = 0.381
= 0.8*0.46 = 0.370
= 0.9*0.38 = 0.346
= 1.0*0.31 = 0.310
These values are in accordance with correct equation given on pp. 4168
Then maximum of these values is selected which is done correctly by authors.