The International Federation of Operational Research Societies (IFORS) is a 60-year-old organisation which is currently composed of 50 national societies. Its origins date to 1955, when the vice-president of the Operations Research Society of America (ORSA) sent a proposal for an international conference to the secretary of the UK society, the Operational Research Society (ORS).
The conference will take place from 12-17 July 2026 in Vienna, Austria.
Our partner Jiří Spitzer from TU Delft will present his paper with the title “Branch-and-Price Algorithm for the Two-Echelon Vehicle Routing Problem with Time Windows and TimeDependent Travel Times”.














