Brief: Gas Plus Says Starts Natural Gas Production At Longanesi Field
March 13 (Reuters) - Gas Plus SpA GSP.MI: GAS PLUS SPA - STARTED NATURAL GAS PRODUCTION FROM RELEVANT FIELD AND SUPPLY OF GAS TO SNAM NETWORK Source text: ID:nBIAb9WrQn Further company coverage: GSP.MI ((reuters.briefs@thomsonreuters.com;))