• Gruber og skjerp i kisdraget Øvre Guldal-Tydal. 

      Aasgaard, Gunnar (NGU (129), Journal article, 1927)
      The occurences described in this paper form a connection between th mining districts around Røros to the south and those around Meråker to the north. The occurences lie in mountain regions partly above the forest line. The ...