Minghua Chen Sudipta Sengupta Miroslav Ponec Philip A. Chou Jin Li Peer-to-Peer utility maximization. 298-303 2008 CISS http://dx.doi.org/10.1109/CISS.2008.4558539 conf/ciss/2008 db/conf/ciss/ciss2008.html#ChenSPCL08