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<https://ai2-s2-public.s3.amazonaws.com/figures/2017-08-08/e9a890d741af06530b4b7db2b103ef6f54e97b05/37-Table6-1.png>
<https://www.semanticscholar.org/paper/Markets-for-Product-Modification-Information-Iyer-Soberman/e9a890d741af06530b4b7db2b103ef6f54e97b05?p2df>