%0 journal article %@ 0030-3917 %A Behnert, I., Matthias, V., Doerffer, R. %D 2004 %J Optica Pura y Aplicada %N 3 %P 3254-3257 %T Aerosol optical thickness and its spectral dependence derived from sunphotometer measurements over the southern North Sea coastal region %U 3 %X