Shishebori, D., Abdolazimi, O., & Andalib Ardakani, D. "Sustainable and Resilient Closed-Loop Drug Supply Chain with Backup Suppliers under Coronavirus Disease Pandemic (COVID-19)", Journal of Industrial Engineering Research in Production Systems, 9, 19, 2022, 33-53. doi: 10.22084/ier.2022.24657.2035