1. Dendrochronological interpretation of geomorphic;Alestalo;Fennia,1971
2. The effect of fertilization on sulphur dioxide damage to conifers in industrial and built-up areas;Björkman;Studia Forestalia Suecica,1970
3. Climatic cycles and tree-growth;Douglass,1928
4. Precision of ring dating in tree-ring chronologies;Douglass;Univ. of Arizona Bull.,1946
5. Dendro-chronological studies;Erlandsson,1936