A/RES/51/152 Page 3 December 1995, subject to the decision of the Security Council to extend the mandate of the Mission beyond 20 December 1996; 9. Decides further that, in accordance with the provisions of its resolution 973 (X) of 15 December 1955, there shall be set off against the apportionment among Member States, as provided for in paragraph 8 above, their respective share in the Tax Equalization Fund of the estimated additional staff assessment income of 3,394,200 dollars approved for the period from 1 July 1996 to 30 June 1997; 10. Invites voluntary contributions to the Mission in cash and in the form of services and supplies acceptable to the Secretary-General, to be administered, as appropriate, in accordance with the procedure established by the General Assembly in its resolutions 43/230 of 21 December 1988, 44/192 A of 21 December 1989 and 45/258 of 3 May 1991; 11. Decides to keep under review during its fifty-first session the agenda item entitled "Financing of the United Nations Mission in Bosnia and Herzegovina". 85th plenary meeting 16 December 1996