Improving accessibility of the web with a computer game. - Luis von Ahn; Shiry Ginosar; Mihir Kedia; Ruoran Liu; Manuel Blum 001 (CHI, 2006)

Verbosity: a game for collecting common-sense facts. - Luis von Ahn; Mihir Kedia; Manuel Blum 001 (CHI, 2006)

Improving Image Search with PHETCH. - Luis von Ahn; Shiry Ginosar; Mihir Kedia; Manuel Blum 001 (ICASSP (4), 2007)