2009 |
18 | EE | Christian Liebchen,
Leon Peeters:
Integral cycle bases for cyclic timetabling.
Discrete Optimization 6(1): 98-109 (2009) |
17 | EE | Ekkehard Köhler,
Christian Liebchen,
Gregor Wünsch,
Romeo Rizzi:
Lower bounds for strictly fundamental cycle bases in grid graphs.
Networks 53(2): 191-205 (2009) |
2008 |
16 | EE | Christian Liebchen,
Elmar Swarat:
The Second Chvatal Closure Can Yield Better Railway Timetables.
ATMOS 2008 |
15 | EE | Christian Liebchen,
Gregor Wünsch:
The zoo of tree spanner problems.
Discrete Applied Mathematics 156(5): 569-587 (2008) |
2007 |
14 | | Christian Liebchen,
Ravindra K. Ahuja,
Juan A. Mesa:
ATMOS 2007 - 7th Workshop on Algorithmic Approaches for Transportation Modeling, Optimization, and Systems, November 15-16, 2007, Sevilla, Spain
Internationales Begegnungs- und Forschungszentrum fuer Informatik (IBFI), Schloss Dagstuhl, Germany 2007 |
13 | EE | Ravindra K. Ahuja,
Christian Liebchen,
Juan A. Mesa:
ATMOS 2007 Abstracts Collection - 7th Workshop on Algorithmic Approaches for Transportation Modeling, Optimization, and Systems.
ATMOS 2007 |
12 | EE | Ravindra K. Ahuja,
Christian Liebchen,
Juan A. Mesa:
ATMOS 2007 Preface - 7th Workshop on Algorithmic Approaches for Transportation Modeling, Optimization, and Systems.
ATMOS 2007 |
11 | EE | Ralf Borndörfer,
Christian Liebchen:
When Periodic Timetables Are Suboptimal.
OR 2007: 449-454 |
10 | EE | Christian Liebchen,
Gregor Wünsch,
Ekkehard Köhler,
Alexander Reich,
Romeo Rizzi:
Benchmarks for Strictly Fundamental Cycle Bases.
WEA 2007: 365-378 |
9 | EE | Christian Liebchen,
Romeo Rizzi:
Classes of cycle bases.
Discrete Applied Mathematics 155(3): 337-355 (2007) |
8 | EE | Michael Elkin,
Christian Liebchen,
Romeo Rizzi:
New length bounds for cycle bases.
Inf. Process. Lett. 104(5): 186-193 (2007) |
2006 |
7 | EE | Christian Liebchen:
Periodic Timetable Optimization in Public Transport.
OR 2006: 29-36 |
2005 |
6 | EE | Christian Liebchen:
A Cut-Based Heuristic to Produce Almost Feasible Periodic Railway Timetables.
WEA 2005: 354-366 |
5 | EE | Christian Liebchen,
Romeo Rizzi:
A greedy approach to compute a minimum cycle basis of a directed graph.
Inf. Process. Lett. 94(3): 107-112 (2005) |
2004 |
4 | EE | Christian Liebchen,
Rolf H. Möhring:
The Modeling Power of the Periodic Event Scheduling Problem: Railway Timetables - and Beyond.
ATMOS 2004: 3-40 |
3 | EE | Christian Liebchen:
Symmetry for Periodic Railway Timetables.
Electr. Notes Theor. Comput. Sci. 92: 34-51 (2004) |
2003 |
2 | EE | Christian Liebchen:
Finding Short Integral Cycle Bases for Cyclic Timetabling.
ESA 2003: 715-726 |
2002 |
1 | EE | Christian Liebchen,
Rolf H. Möhring:
A Case Study in Periodic Timetabling.
Electr. Notes Theor. Comput. Sci. 66(6): (2002) |