author= {Vilar, David and Ney, Hermann},
title= {Cardinality pruning and language model heuristics for hierarchical phrase-based translation},
journal= {Machine Translation},
pages= {217-254},
volume= {26},
number= {3},
year= 2012,
month= sep,
journallink= {http://www.springer.com/computer/ai/journal/10590},
publisher= {Springer Netherlands},
url = {http://dx.doi.org/10.1007/s10590-011-9119-4}