++++ CONVENTION ON JURISDICTION AND THE ENFORCEMENT OF JUDGMENTS - SPECIAL JURISDICTION - JURISDICTION "IN MATTERS RELATING TO A CONTRACT" - CONCEPT - INDEPENDENT INTERPRETATION - INDEPENDENT COMMERCIAL AGENCY AGREEMENT - CLAIMS FOR THE PAYMENT OF COMMISSION AND COMPENSATION FOR WRONGFUL REPUDIATION OF A CONTRACT - INCLUSION ( CONVENTION OF 27 SEPTEMBER 1968, ART . 5 ( 1 ) )