"—Fγ•F,‹g“c^ˆê,ˆÉ“Œ—˜Æ","–³üLAN ‚É‚¨‚¯‚éƒZƒLƒ…ƒŠƒeƒB‹Zp‚Ì“®Œü","SITE2004-1","“dŽqî•ñ’ÊMŠw‰ï‹ZpŒ¤‹†•ñ[‹Zp‚ƎЉïE—Ï—]",,"Vol. 104","No. 96","pp. 1--6",2008,June "Toshiya Itoh,Ryoso Hamane","Improved Approximation Allgorithms for Item Pricing with Bounded Degree and Valuation",,"IEICE Trans. on Information and Systems",,"Vol. 91-D","No. 2","pp. 187-199",2008,Feb.