Bahalke, Unes, Nima Hamta, Amir Reza Shojaeifard, Maryam Alimoradi, and Samira Rabiee. 2022. “A New Heuristic Algorithm for Multi Vehicle Routing Problem With AND OR-Type Precedence Constraints and Hard Time Windows”. Operational Research in Engineering Sciences: Theory and Applications 5 (2):28-60. https://doi.org/10.31181/oresta300622015b.