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Kamal, A. E. and A. Ramamoorthy,
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1+N Protection for Mesh Networks Using Network Coding on Protection Cycles",
U.S. patent 7,869,344, issued January 11, 2011.
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Kamal, A. E. and S. A. Aly,
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Network Protection Using Network Coding",
U.S. patent 8,705,345, issued April 22, 2014.