Ackora Prah, J., Acheson, V., Barnes, B., Takyi, I. and Owusu-Ansah, E. 2022. A 2-Phase Method for Solving Transportation Problems with Prohibited Routes. Pakistan Journal of Statistics and Operation Research. 18, 3 (Sep. 2022), 749-758. DOI:https://doi.org/10.18187/pjsor.v18i3.3911.