Chaf and Chamkhaleh can be found at GEOnet Names Server, at this link, by opening the Advanced Search box, entering "-3057972" in the "Unique Feature Id" form, and clicking on "Search Database".
Rahimi, Mohammad Reza (18 May 1388). "Divisional changes and reforms in Gilan province". Laws and Regulations Portal of the Islamic Republic of Iran (in Persian). Ministry of Interior, Defense Political Commission. Archived from the original on 5 October 2023. Retrieved 5 October 2023.
Rahimi, Mohammad Reza (18 May 1388). "Divisional changes and reforms in Gilan province". Laws and Regulations Portal of the Islamic Republic of Iran (in Persian). Ministry of Interior, Defense Political Commission. Archived from the original on 5 October 2023. Retrieved 5 October 2023.