--- a/main/control/devel/pdfdoc/control.tex	Thu Oct 18 16:37:33 2012 +0000
+++ b/main/control/devel/pdfdoc/control.tex	Thu Oct 18 18:27:11 2012 +0000
@@ -78,15 +78,16 @@
 @end itemize
 
 @sp 3
-@heading Acknowledgments
+@heading Acknowledgment
 The author is indebted to several people and institutions who helped
 him to achieve his goals. I am particularly grateful to Luca Favatella
 who introduced me to Octave development as well as discussed and revised
-my early draft code with great patience. My continued support from the
-@acronym{FHNW} University of Applied Sciences Northwestern Switzerland,
-where I could work on the control package as a semester project, has also
-been important. Furthermore, I thank the @acronym{SLICOT} authors
-Peter Benner, Vasile Sima and Andras Varga for their advice.
+my early draft code with great patience. The continued support from the
+@acronym{FHNW} University of Applied Sciences Northwestern Switzerland
+has also been important. Namely, sincere thanks are given to my advisors,
+professors Hans Buchmann and J@"urg Peter Keller.
+Furthermore, I thank the @acronym{SLICOT} authors Peter Benner,
+Vasile Sima and Andras Varga for their advice.
 Finally, I appreciate the feedback, bug reports and patches I have received
 from various people. The names of all contributors should be listed in the
 @acronym{NEWS} file.