Related Rule
Russian Federation
Practice Relating to Rule 82. Recording of the Placement of Landmines
The Russian Federation’s Regulations on the Application of IHL (2001) states: “Minefields reference (minefields location registration) shall be done in relation to the coordinates of at least two reference points.” 
Russian Federation, Regulations on the Application of International Humanitarian Law by the Armed Forces of the Russian Federation, Ministry of Defence of the Russian Federation, Moscow, 8 August 2001, § 142.