updated RTS_theory.asciidoc authored by Patrick Schmitt's avatar Patrick Schmitt
Asciidoc on this wiki does not support german specific letters like (ü,ö,ä, ...) inside a Italian style command ( _test_)

replaced ü with ue
......@@ -28,7 +28,7 @@ The principle of ETS is shown in chapter xy of this wiki.
The content of this chapter is taken from the master thesis "Development of a low-cost micro-controller based oscilloscope including equivalent time sampling" by Ing. Harald Schloffer, MSc, November 2016 +
. Schloffer Harald: _Development of a low-cost micro-controller based oscilloscope including equivalent time sampling_, University of Applied Sciences FH Technikum Wien, 2016
. REINHARD LERCH, P. D.-I: _Elektrische Messtechnik Analoge, digitale und _, vol. 6. Springer Vieweg, 2012
. REINHARD LERCH, P. D.-I: _Elektrische Messtechnik Analoge, digitale und computergestuetzte Verfahren_, vol. 6. Springer Vieweg, 2012
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