19 Persons belonging to national or linguistic minorities shall have the right, in community with the other members of their group, to develop and use their own language. Article 64 1. In areas in which significant numbers or percentages of members of minorities reside, public authorities must, in the development and implementation of their policies, consider the impact of such policies on such minorities. Where such an assessment reveals an impact, the policy must be reassessed to ensure that any negative impact is reduced or eliminated, and a positive impact is created or enhanced. 2. States Parties undertake to collect appropriate information, including statistical and research data, to enable them to formulate and implement policies to give effect to the present Convention. The process of collecting and maintaining this information shall: (a) Comply with legally established safeguards, including legislation on data protection, to ensure confidentiality and respect for the privacy of persons belonging to national or ethnic, religious or belief and linguistic minorities; (b) Comply with internationally accepted norms to protect human rights and fundamental freedoms and ethical principles in the collection and use of statistics. 3. The information collected in accordance with this article shall be disaggregated, as appropriate, and used to help assess the implementation of States Parties’ obligations under the present Convention and to identify and address the barriers faced by persons belonging to national or ethnic, religious or belief and linguistic minorities in exercising their rights. 4. States Parties shall assume responsibility for the dissemination of these statistics and ensure their accessibility to persons belonging to national or ethnic, religious or belief and linguistic minorities and others. Article 65 1. States Parties recognize the importance of international cooperation and its promotion, in support of national efforts for the realization of the purpose and objectives of the present Convention and shall undertake appropriate and effective measures in this regard, between and among States and, as appropriate, in partnership with relevant international and regional organizations and civil society, in particular organizations of persons belonging to minorities. Such measures could include, inter alia: (a) ensuring that international cooperation, including international development programmes, is inclusive of and accessible to persons belonging to minorities; (b) facilitating and supporting capacity-building, including through the exchange and sharing of information, experiences, training programmes and best practices; (c) facilitating cooperation in research and access to scientific and technical knowledge; (d) providing, as appropriate, technical and economic assistance, including by facilitating access to and sharing of accessible and assistive technologies, and through the transfer of technologies.