%% -*-BibTeX-*- @Article{BraennlundLindbergNouNilsson1998, author = "U. Br{\"a}nnlund and P. O. Lindberg and A. Nou and J.-E. Nilsson", title = "Railway Timetabling using Lagrangian Relaxation", journal = "Transportation Science", volume = "32", number = "4", pages = "358--369", year = "1998", language = "English", }