A new two-stage nurse scheduling approach based on occupational justice considering assurance attendance in works shifts by using Z-number method: A real case studyMohammad Javad Pahlevanzadeh, Fariborz Jolai, Fariba Goodarzian and Peiman GhasemiRAIRO-Oper. Res., 55 6 (2021) 3317-3338DOI: https://doi.org/10.1051/ro/2021157