Chicago--Tribune Co., citing last week's terrorist attacks on New York and Washington, this week warned its third-quarter and full-year earnings will fall short of analysts' estimates. Knight Ridder, also citing the attacks, said its third-quarter results would fall short of analysts' expectations. Tribune Co., which publishes the Chicago Tribune and Los Angeles Times, didn't provide specific estimates. Analysts had been expecting third-quarter earnings of 17 cents a share and full-year earnings of 98 cents a share, according to Thomson Financial/First Call. In last year's third quarter, Tribune earned 22 cents a share on revenue of about $1.36 billion. Knight Ridder, which publishes the Miami Herald, said it expects to post third-quarter earnings of about 65 cents a share. Analysts had expected earnings of 79 cents a share. In last year's third quarter, Knight Ridder earned $76.1 million, or 87 cents a share on revenue of $812.9 million.