MRSK of Centr’s, TransContainer’s, MOEK’s, MRSK of Volga’s, IDGC of Centre and Privolzhie’s, MRSK of Sibiria’s, MRSK of South’s, Atomenergoprom’s, Rosseti’s, Kuzbasskaya Toplivnaya Company’s, ER-Telecom Holding’s 1 Q 2019 Y IFRS results were published