@article{Peng2013:free, 
title={Free-gram phrase identification for modeling Chinese text}, 
author={Peng, Xi and Yi, Zhang and Wei, Xiao-Yong and Peng, De-Zhong and Sang, Yong-Sheng}, 
journal={Information Processing Letters}, 
volume={113}, 
number={4}, 
pages={137--144}, 
year={2013}, 
publisher={Elsevier} }