@ARTICLE{Yongning08, 
author={Yongning Tang and Al-Shaer, E. and Boutaba, R.}, 
journal={Network and Service Management, IEEE Transactions on}, 
title={Efficient fault diagnosis using incremental alarm correlation and active investigation for internet and overlay networks}, 
year={2008}, 
month=march , 
volume={5}, 
number={1}, 
pages={36 -49}, 
}