@article{DOCMA_1998__S9__a12,
     author = {Schrijver, Alexander},
     title = {Routing and timetabling by topological search},
     journal = {Documenta mathematica},
     pages = {687--695},
     publisher = {mathdoc},
     volume = {ICM Berlin 1998, Vol. III},
     year = {1998},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DOCMA_1998__S9__a12/}
}