Li Deng and Xuedong Huang
July 2004
http://delivery.acm.org/10.1145/1010000/1005834/p11-crawford.html?key1=1005834&key2=8573713211&coll=GUIDE&dl=GUIDE&CFID=51580657&CFTOKEN=3943007
In Communications of the ACM. Vol. 47, No. 7, July 2004, pp. 11-13
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