@article{2014:TAC_ratio,
title ={{Average Consensus in the Presence of Delays in Directed Graph Topologies}},
journal ={IEEE Transactions on Automatic Control},
volume ={59},
number ={3},
pages ={763--768},
month ={March},
year ={2014},
author ={Hadjicostis, C. N. and Charalambous, T.},
}