Andrew Hagedorn Sachin Agarwal David Starobinski Ari Trachtenberg Rateless Coding with Feedback. 1791-1799 2009 INFOCOM http://dx.doi.org/10.1109/INFCOM.2009.5062099 conf/infocom/2009 db/conf/infocom/infocom2009.html#HagedornAST09