Before and after the Peace Treaty some meetings of Great Powers Foreign Ministers were held, here below find the link to the report of the US Representative:
Peace Conference, Paris, 10 August 1946
Alcide De Gasperi speech regarding the situation of Trieste and the Italian position during the Peace Conference in Paris.
Acceptance of the Statute of Trieste
By a letter of December 12, 1946, from James F. Byrnes, Chairman of the Council of Foreign Ministers the Security Council was asked to approve the articles of the Treaty of Peace with Italy establishing the Free Territory of Trieste. The matter was debated at the 89th and 91st meetings of the Security Council on January 7 and 9, 1947, and approved on the latter date by a vote of 10 in favor with one abstention (Australia).
The copy that you can download was published in English and Italian in Trieste by ALLIED MILITARY GOVERNMENT of VENEZIA GIULIA - 1947
The FREE TERRITORY OF TRIESTE was established by PEACE TREATY as follows:
PART II - POLITICAL CLAUSES
SECTION III - FREE TERRITORY OF TRIESTE
Article 21 - 1. There is hereby constituted the Free Territory of Trieste, consisting of the area lying between the Adriatic Sea and the boundaries defined in Articles 4 and 22 of the present Treaty. The Free Territory of Trieste is recognized by the Allied and Associated Powers and by Italy, which agree that its integrity and independence shall be assured by the Security Council of the United Nations.
2. Italian sovereignty over the area constituting the Free Territory of Trieste, as above defined, shall be terminated upon the coming into force of the present Treaty.
3. On the termination of Italian sovereignty, the Free Territory of Trieste shall be governed in accordance with an instrument for a provisional régime drafted by the Council of Foreign Ministers and approved by the Security Council. This Instrument shall remain in force until such date as the Security Council shall fix for the coming into force of the Permanent Statute which shall have been approved by it. The Free Territory shall thenceforth be governed by the provisions of such Permanent Statute. The texts of the Permanent Statute and of the Instrument for the Provisional Regime are contained in Annexes VI and VII.
4. The Free Territory of Trieste shall not be considered as ceded territory within the meaning of Article 19 and Annex XIV of the present Treaty.
5. Italy and Yugoslavia undertake to give to the Free Territory of Trieste the guarantees set out in Annex IX.
You will find the parts regarding Trieste through the links of the Annexes below (work in progress):
ANNEX VI - PERMANENT STATUTE OF THE FREE TERRITORY OF TRIESTE (click here)
ANNEX VII - INSTRUMENT FOR THE PROVISIONAL REGIME OF THE FREE TERRITORY OF TRIESTE (click here)
ANNEX VIII - INSTRUMENT FOR THE FREE PORT OF TRIESTE (click here)
ANNEX IX - TECHNICAL DISPOSITIONS REGARDING THE FREE TERRITORY OF TRIESTE (click here)
ANNEX X - ECONOMIC AND FINANCIAL PROVISIONS RELATING TO THE FREE TERRITORY OF TRIESTE (click here)
NOTE: The FREE TERRITORY OF TRIESTE (ZONE A & ZONE B) started officially on 16th September 1947.