Metsä-Serla and Others v Commission Judgment of the Court of First Instance (Third Chamber, extended composition) of 14 May 1998. # Metsä-Serla Oy, United Paper Mills Ltd, Tampella Corporation and Oy Kyro AB v Commission of the European Communities. # Article 15(2) of Regulation No 17 - Joint and several liability for payment of the fine. # Joined cases T-339/94, T-340/94, T-341/94 and T-342/94. TITJUR