1. An analysis of the possible recent change in atmospheric carbon dioxide concentration;Bray;Tellus,1959
2. The carbon dioxide content of field air;Chapman;Plant Physiology,1954
3. Messmethoden zur Bestimmung des CO2-Gehalts der Atmosphäre und die Bedeutung derartiger Messungen für die Biometeorologie und Meteorologie;Effenberger;Annalen der Meteorologie,1951
4. Report on an informal conference in chemistry held at the Meteorological Institute, University of Stockholm, May 24-26, 1954;Eriksson;Tellus,1954
5. Micro-determination of CO2 in the air with current data for Scandinavia;Fonselius;Tellus,1955