Katsuhide Fujita Takayuki Ito A Preliminary Analysis of Computational Complexity of the Threshold Adjusting Mechanism in Multi-issue Negotiations. 383-386 2007 conf/iat/2007w Web Intelligence/IAT Workshops http://dx.doi.org/10.1109/WIIATW.2007.4427612 db/conf/iat/iatw2007.html#FujitaI07