000 00293nam a2200121Ia 4500
003 LDD
040 _cLDD
041 _aen
245 0 _aCommunications of the ACM
260 _aAssociation for Computing Machinery
_bNew york
_c1 Jan,2004-30 Apr,2007
362 _a47-47
_b01-Apr
942 _2ddc
_cJ
999 _c177987
_d177987