%0 GKSS report %@ %A Ansmann, A., Riebesell, M., Wandinger, U., Weitkamp, C., Michaelis, W. %D 1991 %J Symposium on Lower Tropospheric Profiling: Needs and Technologies, a symposium to critically review and evaluate scientific needs and access current and projected technologies; extended abstracts %P 19-20 %T Combined Raman elastic-backscatter lidar for the independent measurement of aerosol backscatter and extinction profiles %U %X