Slovak refinery Slovnaft AS(BSSE: 1SLN01AE) is prepared to continue talks with Italian concern Enel SpA(BIT:V) about the purchase of its stake in Slovak power producer Slovenské Elektrárne A.S., if Enel fails to agree with Czech holding Energeticky a Prumyslovy Holding, a.s., Slovnaft's Chief Executive Officer Oszkar Vilagi told journalists.