@krushankumar
Dr vijaymalik has very well written an article on ‘ Gimmicks used by managements’, it would certainly help to understand the ways and means the managenments uses in laundering the balancesheet,P/L and cash flow statements.
According to the article FCF is better matrix to judge the company rather OCF because it can also be manipulated.
Check out at drvijaymalik.com
hope it helps
regards
chirag