1. Lake tap-the Norwegian method;Berdal,1985
2. Landing of gas from Åsgard with new technology;Fuhre;Byggeindustrien,1998
3. Åsgard landfall, challenges at 60 m depth;Gullikstad,1998
4. Works for the piercing at Sture;Hoel,1987
5. Troll phase 1 - shore approach tunnels;Klüver,1991