@article{202011.0310, doi = {10.20944/preprints202011.0310.v1}, url = {https://doi.org/10.20944/preprints202011.0310.v1}, year = 2020, month = {November}, publisher = {Preprints}, author = {Pouria Khodabandeh and Vahid Kayvanfar and Majid Rafiee and Frank Werner}, title = {A Bi-Objective Home Health Care Routing and Scheduling Model with Considering Nurse Downgrading Costs}, journal = {Preprints} }