A/51/536 English Page 39 regional basis, those of the United Nations in the field of minority protection. Ongoing cooperation between the United Nations and regional organizations can only reinforce minority protection. Notes 1/ The substantial report on the protection and promotion of the rights of persons belonging to minorities submitted by the Government of Austria will be reflected in greater detail in the report to the Commission on Human Rights at its fifty-third session. 2/ A/CONF.157/24 (Part I), chap. III. 3/ With reference to some countries where indigenous populations, rather than minority groups, are affected by human rights violations, the Committee has invoked article 27 of the International Covenant on Civil and Political Rights. -----