László Czap 0001 Christina Fragouli Vinod M. Prabhakaran Suhas N. Diggavi Secure network coding with erasures and feedback. 1517-1524 2013 Allerton https://doi.org/10.1109/Allerton.2013.6736707 conf/allerton/2013 db/conf/allerton/allerton2013.html#CzapFPD13