KIEV, Nov. 30 - Ukraine's Naftogaz Ukrayiny and Russia's Gazprom have signed supplement No. 1 to a gas trade contract which records the changes in the volume of gas imports by Naftogaz Ukrayiny in 2009 and confirms the supply volume for 2010, Naftogaz Ukrayiny CEO Oleh Dubyna said.

He was answering a question from the Dzerkalo Tyzhnia (Mirror Weekly) newspaper about the documents signed in Moscow on Nov. 24.