Art. 31-bis l. 11 February 1994, n. 109 (introduced by art. 9 d.l. 3 April 1995, n. 101, converted, with modifications, in l. 2 June 1995, n. 216), which involves, to fin de lla protection jurisdiction, the equation of the concessions in material of works public to the contracts, is applicable also to controversies relative ai works granted analyzes ORLY AT DATA OF HIS INDO INTUCTION IN VICE E, GETTE THE HIS BETTER RETRACTIVE, MAKES VALID EFFECTIVE THE THE CLUSOLA TIMISSORY, ATERIORY INDERIORY STIPULATED, DI referring A D referees of the disputes in material of concessions of works public now falling, where they invest positions of right subjective, in the jurisdiction of the judge ordinary.