@article{mta-hlbo10,
AUTHOR={Shih-Yu Huang and Yeuan-Kuen Lee and Graeme Bell and Zhan-he Ou},
TITLE={An Efficient Segmentation Algorithm for CAPTCHAs with Line 
Cluttering and Character Warping},
JOURNAL={Multimedia Tools and Applications},
YEAR={2010},
VOLUME={48},
NUMBER={2},
MONTH=jun,
PAGES={267-289}
}