Performance of a greedy algorithm for edge covering by cliques in interval graphs - Gabrio Caimi; Holger Flier; Martin Fuchsberger; Marc Nunkesser (CoRR, 2008)

Scheduling Additional Trains on Dense Corridors. - Holger Flier; Thomas Graffagnino; Marc Nunkesser (SEA, 2009)

Mining Railway Delay Dependencies in Large-Scale Real-World Delay Data. - Holger Flier; Rati Gelashvili; Thomas Graffagnino; Marc Nunkesser (Robust and Online Large-Scale Optimization, 2009)

Vertex Disjoint Paths for Dispatching in Railways. - Holger Flier; Matús Mihalák; Anita Schöbel; Peter Widmayer; Anna Zych (ATMOS, 2010)

Track Allocation in Freight-Train Classification with Mixed Tracks. - Markus Bohlin; Holger Flier; Jens Maue; Matús Mihalák (ATMOS, 2011)

Maximum Independent Set in 2-Direction Outersegment Graphs. - Holger Flier; Matús Mihalák; Peter Widmayer; Anna Zych (WG, 2011)

Optimal Freight Train Classification using Column Generation. - Markus Bohlin; Florian Dahms; Holger Flier; Sara Gestrelius (ATMOS, 2012)

Selecting vertex disjoint paths in plane graphs. - Holger Flier; Matús Mihalák; Peter Widmayer; Anna Zych; Yusuke Kobayashi 001; Anita Schöbel (Networks, 2015)

Optimization Methods for Multistage Freight Train Formation. - Markus Bohlin; Sara Gestrelius; Florian Dahms; Matús Mihalák; Holger Flier (Transp. Sci., 2016)