Probabilistic analysis of annual variations and interannual variability of Wolf numbers, atmospheric circulation forms, water exchange between the Baltic sea and the North sea and its components,
Smirnova, A. I., N. I. Minin, N. P. Yakovleva (1988),
Moderforming Factors, Hydrometeorological and Hydrochemical Processes in Seas of the USSR, A. I. Smirnova and M. A. Borisovskiy, (eds.) p. 5–15