E/CN.4/2006/73 page 8 C. Methods of work 25. The Special Rapporteur has continued to develop the working methods applied by his predecessor.4 These methods of work were based on the mandate established in Commission resolution 1999/44 and subsequent resolutions. A summary of these methods is set forth below. A more detailed description of the mandate’s methods of work from its inception can be found in last year’s report to the Commission (E/CN.4/2005/85, paras. 49-73). 26. Resolution 1999/44 invites the Special Rapporteur “to request, receive and exchange information on violations of human rights of migrants” (para. 5). In accordance with this, the Special Rapporteur requests and receives information from all relevant sources on violations of the human rights of migrants and their families. To that end, the Special Rapporteur has adopted the letters of allegation procedure and the urgent action procedure, in line with the suggestions and methods of work proposed in 1999 by the sixth meeting of special procedures mandate holders. 27. In examining reports received, the Special Rapporteur considers criteria for their admissibility. These include: (a) The existence of authoritative reports indicating violations of the human rights of migrants from, for example, national commissions on human rights, United Nations human rights mechanisms and bodies, or NGOs; (b) The consistency of the information with other situations or individual cases from the country in question previously brought to the Special Rapporteur’s attention; (c) The reliability of the source of the information; (d) The existence of domestic legislation that is incompatible with international human rights obligations. 28. Governments, intergovernmental organizations, NGOs, alleged victims of human rights violations, victims’ families and witnesses, are important sources of information for the Special Rapporteur’s work. United Nations agencies also provide the Special Rapporteur with important information. 29. Moreover, in its resolution 2000/48, the Commission requested the Special Rapporteur to include in her work schedule a programme of visits with a view to improving the protection afforded to the human rights of migrants, thus implementing as broadly and fully as possible all aspects of her mandate. The realization of visits is a central aspect of the Special Rapporteur’s work. 30. The previous Special Rapporteur carried out 11 on-site visits. The Special Rapporteur hopes to continue this activity and, as stated above, ensure follow-up of past visits and carry out visits to countries where information received indicates the existence of specific problems, to countries that he considers representative of the problems and challenges faced by a particular region, and to countries in regions that, due to time constraints, were visited less frequently by the previous Special Rapporteur.