Dar, Q.F., Young Hyo Ahn, Gulbadin Farooq Dar and Jin Hee Ma 2022. Data Envelopment Analysis in Three-Stage Network Structure with Slack Based Measure (SBM). Statistics, Optimization & Information Computing. 10, 2 (Mar. 2022), 643-657. DOI:https://doi.org/10.19139/soic-2310-5070-840.