John Charles Harsanyi (born May 29, 1920 in Budapest, Hungary; died August 9, 2000 in Berkeley, California, United States) was a Hungarian- Australian-American economist and Nobel Laureate. He is best known for his contributions to the study of game theory and its application to economics, specifically for his developing the highly innovative analysis of games of incomplete information, so-called Bayesian games. Wikipedia
The strategic analysis of auctions relies heavily on Harsanyi's most important work, on games with incomplete information, developed in the late 1960s. findarticles.com/p/articles/mi_qn4158/is_20000919/ai_n143...
The definitive Wikipedia entry for John Harsanyi. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/John_Harsanyi