%0 journal article %@ 0584-8547 %A Knoth, J.,Prange, A.,Schneider, H.,Schwenke, H. %D 1997 %J Spectrochimica Acta B %N %P 907-913 %T Variable X-ray excitation for total reflection X-ray fluorescence spectroscopy using an Mo/W alloy anode and a tunable double multilayer monochromator %U %X