Marco Conti Enrico Gregori Gaia Maselli Cooperation Issues in Mobile Ad Hoc Networks. 803-808 2004 conf/icdcsw/2004 ICDCS Workshops http://csdl.computer.org/comp/proceedings/icdcsw/2004/2087/06/208760803abs.htm db/conf/icdcsw/icdcsw2004.html#ContiGM04