@misc{behnert_aerosol_optical_2004, 
author={Behnert, I.,Matthias, V.,Doerffer, R.},
title={Aerosol optical thickness and its spectral dependence derived from sunphotometer measurements over the southern North Sea coastal region},
year={2004},
howpublished = {conference poster: Huelva (E); 10.-14.05.2004},
note = {Online available at: \url{} (DOI). Behnert, I.; Matthias, V.; Doerffer, R.: Aerosol optical thickness and its spectral dependence derived from sunphotometer measurements over the southern North Sea coastal region. In: AERONET/PHOTONS Workshop 2004. Huelva (E). 2004.}}