A/RES/56/85 work, and also to invite as observers to the Commission representatives of interested regional intergovernmental organizations and other interested international bodies, including the International Tribunal for the Prosecution of Persons Responsible for Serious Violations of International Humanitarian Law Committed in the Territory of the Former Yugoslavia since 1991 and the International Criminal Tribunal for the Prosecution of Persons Responsible for Genocide and Other Serious Violations of International Humanitarian Law Committed in the Territory of Rwanda and Rwandan Citizens Responsible for Genocide and Other Such Violations Committed in the Territory of Neighbouring States, between 1 January 1994 and 31 December 1994; 7. Notes that non-governmental organizations may participate in the work of the Preparatory Commission by attending its plenary and its other open meetings, in accordance with the rules of procedure of the Commission, receiving copies of the official documents and making available their materials to delegates; 8. Encourages States to make voluntary contributions to the trust funds established pursuant to General Assembly resolutions 51/207 and 52/160, the mandates of which were expanded pursuant to Assembly resolution 53/105, towards meeting the costs of the participation in the work of the Preparatory Commission of the least developed countries and of those developing countries not covered by the trust fund established pursuant to resolution 51/207; 9. Requests the Secretary-General to undertake the preparations necessary to convene, in accordance with article 112, paragraph 1, of the Rome Statute, the meeting of the Assembly of States Parties to be held at United Nations Headquarters upon the entry into force of the Statute in accordance with article 126, paragraph 1, of the Statute; 10. Decides that expenses that may accrue to the United Nations as a result of the implementation of the request contained in paragraph 9 above, as well as expenses resulting from the provision of facilities and services for the meeting of the Assembly of States Parties and any consequent follow-up shall be paid in advance to the Organization, for which an appropriate mechanism will be set up in the near future; 11. Notes that the United Nations and the Secretary-General may participate, without the right to vote, in the work of the Assembly of States Parties; 12. Requests the Secretary-General to invite, as observers to the meeting of the Assembly of States Parties, representatives of intergovernmental organizations and other entities that have received a standing invitation from the General Assembly, pursuant to its relevant resolutions, 7 to participate in the capacity of observers in its sessions and work, and also to invite as observers to the Assembly representatives of interested regional intergovernmental organizations and other international bodies invited to the Rome Conference or accredited to the Preparatory Commission for the International Criminal Court; 13. Notes that non-governmental organizations invited to the Rome Conference, registered to the Preparatory Commission for the International Criminal Court or having consultative status with the Economic and Social Council of the United Nations whose activities are relevant to the activities of the Court may participate in the work of the Assembly of States Parties in accordance with agreed rules; 3