%% -*-BibTeX-*- @InProceedings{AchterbergBerthold2009, author = "Tobias Achterberg and Timo Berthold", editor = "Willem Jan van Hoeve and John N. Hooker", booktitle = "Integration of AI and OR Techniques in Constraint Programming for Combinatorial Optimization Problems", title = "Hybrid Branching", volume = "5547", publisher = "Springer", pages = "309--311", year = "2009", series = "Lecture Notes in Computer Science", }