1. Vegetation zones and their sections in northwestern Europe;Ahti;Ann. Bot. Fenn.,1968
2. Climate fluctuations in Sweden 1860-1987;Alexandersson;SMHI Rep. Meteorol. Climatol.,1989
3. Temperature and precipitation in Sweden 1961-90. Reference normals;Alexandersson;SMHI Rep. Meteorol. Climatol.,1991
4. Arnborg , T. 1950 Phytogeographical forest excursion to North Sweden, July 21-August 6, 1950.