@article{Zappala_2004,
title={Alternate Path Routing for Multicast},
volume={12},
ISSN={1063-6692},
url={http://dx.doi.org/10.1109/tnet.2003.820255},
DOI={10.1109/tnet.2003.820255},
number={1},
journal={IEEE/ACM Transactions on Networking},
publisher={Institute of Electrical and Electronics Engineers (IEEE)},
author={Zappala,
D.},
year={2004},
month=feb,
pages={30–43} }