Mumbai, May 19 (Reporter) The rupee on Monday gained further by 11 paise to close positive at 85.40 against US Dollar on brisk sell-off of the greenback by foreign bankers and importers, dealers at the Forex Market said. The domestic unit that had slid by eight paise to 85.59 in opening session, erased earlier losses and ended firm at 85 40, advancing by 11 paise as compared to its previous close. The rupee ended strong because of the weakness of the American currency against other world currencies, however, the weak close of domestic equity markets restricted its further gains. The rupee recorded day's high and low at 85.36 and 85.61, respectively, dealers added...////...