Mnich, MatthiasMatthiasMnichMömke, TobiasTobiasMömke2020-01-242020-01-242018European Journal of Operational Research (2018)http://hdl.handle.net/11420/4562en0377-2217European journal of operational research20182Improved integrality gap upper bounds for TSP with distances one and twoJournal Article10.1016/j.ejor.2017.09.036Other