Richard Peng Approximate Undirected Maximum Flows in <i>O</i>(<i>m</i>polylog(<i>n</i>)) Time. 1862-1867 2016 SODA https://doi.org/10.1137/1.9781611974331.ch130 http://dl.acm.org/citation.cfm?id=2884565 conf/soda/2016 db/conf/soda/soda2016.html#Peng16