BELGRADE (Serbia), January 18 (SeeNews) - Serbian gas monopoly Srbijagas and Russia’s Gazprom signed a Memorandum of Understanding on a project for the expansion of the capacity of the Banatski Dvor underground gas storage facility by 300 million cubic metres to 750 million cubic metres and doubling of the maximum withdrawal capacity up to 10 million cubic metres per day, Gazprom said.