1. Precipitation;Atkinson,1976
2. European Precipitation Chemistry Atlas;Barthelmie,1989
3. High sulphate and nitrate concentrations in southern Scandinavian precipitaion: casestudy of one month to test monthly pressure pattern indicator;Barthelmie,1989
4. Atmosphere, Weather and Climate;Barry,1978
5. Synoptic Climatology;Barry,1973