The tax collector Efim's complaint of the 1559, and the Russian-Danish Lapland borderland in the middle of the 16th century

The article is devoted to the study of the forms of Russian-Danish borderland in Lapland in the middle of the 16th century; the author reveals the main contradictions and disputable issues in Russian and foreign historiography. On the base of different sources, the author tries to reconstruct configuration of Russian-Danish northern borderland.