Stefanutti TITJUR Judgment of the Court (Second Chamber) of 6 October 1987. # Office national des pensions pour travailleurs salariés (ONPTS) v Domenica Stefanutti. # Reference for a preliminary ruling: Cour du travail de Mons - Belgium. # Social security - Application of national rules for the overlapping of benefits - Classification of an invalidity pension of another Member State. # Case 197/85.