Fuzzy optimization model for a blood supply network in the post-disaster phase, considering a branch-and-cut approachSina Abbasi, Fatemeh Eshghi, Sarow Saeedi, Amir Amin and Mojdeh Ardeshir NasabiRAIRO-Oper. Res., 60 1 (2026) 201-225DOI: https://doi.org/10.1051/ro/2025156