Multi-stage appointment scheduling for outpatient chemotherapy unit: a case studyAsma Bouras, Malek Masmoudi, Nour El Houda Saadani, Zied Bahroun and Mohamed Amine AbdeljaouadRAIRO-Oper. Res., 55 2 (2021) 589-610DOI: https://doi.org/10.1051/ro/2021025