@Article{acp-3-1965-2003, AUTHOR = {Eckstein, E. and Perner, D. and Brühl, Ch. and Trautmann, T.}, TITLE = {A new actinic flux 4p-spectroradiometer: instrument design and application to clear sky and broken cloud conditions}, JOURNAL = {Atmospheric Chemistry and Physics}, VOLUME = {3}, YEAR = {2003}, NUMBER = {6}, PAGES = {1965--1979}, URL = {http://www.atmos-chem-phys.net/3/1965/2003/}, ISSN = {1680-7316} }