[Boost-users] Get results of graph cut?

If I do this: double flow = kolmogorov_max_flow(g, SourceNode, SinkNode); I get the value of the max flow, but how do I tell which nodes of g belong to the "source side" of the graph and which nodes belong to the "sink side"? (thinking of it as a min cut rather than a max flow problem) Also, is it possible to tell the max flow algorithm to use multiple sources/sinks? Thanks, David