I. C. Lopes et al., "Parcel Delivery Services: A Sectorization Approach with Simulation", in Operational Research. APDIO 2022. Springer Proc. in Mathematics & Statistics, Almeida, J.P., Alvelos, F.P.e., Cerdeira, J.O., Moniz, S., Requejo, C., Ed., Évora, Portugal, Springer, N/A, vol. 437, pp. 113-124