An analysis of the spatial distribution of approximate 8 years periodicity in NCEP/NCAR and ERA-40 temperature fieldsP. Pišoft, J. Mikšovský and M. ŽákEur. Phys. J. Special Topics, 174 (2009) 147-155DOI: https://doi.org/10.1140/epjst/e2009-01097-3