@article{BorndoerferHoppmannKarbsteinetal.2020, author = {Ralf Bornd{\"o}rfer and Heide Hoppmann and Marika Karbstein and Niels Lindner}, title = {Separation of cycle inequalities in periodic timetabling}, journal = {Discrete Optimization}, number = {35}, pages = {100552}, doi = {10.1016/j.disopt.2019.100552}, year = {2020}, }