diff --git a/header.tex b/header.tex
index 458ed26..b83bb39 100644
--- a/header.tex
+++ b/header.tex
@@ -291,7 +291,7 @@
 %
 \newboolean{showexercisesolutions}
 \setboolean{showexercisesolutions}{true}
-\newcommand{\exercisesolutions}{chapter}  % 0: here, 1: chapter, 2: end
+\newcommand{\exercisesolutions}{end}  % 0: here, 1: chapter, 2: end
 % we need this also as numbers:
 \ifthenelse{\equal{\exercisesolutions}{end}}{\newcommand{\exercisesolutionsnum}{2}}{%
   \ifthenelse{\equal{\exercisesolutions}{chapter}}{\newcommand{\exercisesolutionsnum}{1}}{%
@@ -366,7 +366,6 @@
     \renewcommand{\theenumi}{\saveenumi}%
     \end{mdframed}%
   }
-}
 \newcommand{\printsolutions}{\ifthenelse{\equal{\exercisesolutions}{chapter}%
     \or\(\equal{\exercisesolutions}{end}\and\not\isundefined{\chapternumber}\)}{%
     \immediate\closeout\solutions%
diff --git a/pointprocesses/lecture/pointprocesses.tex b/pointprocesses/lecture/pointprocesses.tex
index 1659f2f..cbeaf80 100644
--- a/pointprocesses/lecture/pointprocesses.tex
+++ b/pointprocesses/lecture/pointprocesses.tex
@@ -465,7 +465,7 @@ representation of the response. The process of convolution can be
 imagined as replacing each event of the spiketrain with the kernel
 (figure \ref{convratefig} top). The superposition of the replaced
 kernels is then the firing rate (if the kerel is correctly normalized
-to an integral of one, figure \ref{convreffig}
+to an integral of one, figure \ref{convratefig}
 bottom). \sindex[term]{Feuerrate!Faltungsmethode}
 
 In contrast to the other methods the convolution methods leads to a
diff --git a/pointprocesses/lecture/pointprocessscetchA.eps b/pointprocesses/lecture/pointprocessscetchA.eps
index 95fada0..9062460 100644
--- a/pointprocesses/lecture/pointprocessscetchA.eps
+++ b/pointprocesses/lecture/pointprocessscetchA.eps
@@ -1,7 +1,7 @@
 %!PS-Adobe-2.0 EPSF-2.0
 %%Title: pointprocessscetchA.tex
 %%Creator: gnuplot 4.6 patchlevel 4
-%%CreationDate: Sun Dec  1 14:45:38 2019
+%%CreationDate: Mon Dec  2 10:40:01 2019
 %%DocumentFonts: 
 %%BoundingBox: 50 50 373 135
 %%EndComments
@@ -430,10 +430,10 @@ SDict begin [
   /Title (pointprocessscetchA.tex)
   /Subject (gnuplot plot)
   /Creator (gnuplot 4.6 patchlevel 4)
-  /Author (jan)
+  /Author (benda)
 %  /Producer (gnuplot)
 %  /Keywords ()
-  /CreationDate (Sun Dec  1 14:45:38 2019)
+  /CreationDate (Mon Dec  2 10:40:01 2019)
   /DOCINFO pdfmark
 end
 } ifelse
diff --git a/pointprocesses/lecture/pointprocessscetchA.pdf b/pointprocesses/lecture/pointprocessscetchA.pdf
index 149f7ba..b3f922b 100644
Binary files a/pointprocesses/lecture/pointprocessscetchA.pdf and b/pointprocesses/lecture/pointprocessscetchA.pdf differ
diff --git a/pointprocesses/lecture/pointprocessscetchB.eps b/pointprocesses/lecture/pointprocessscetchB.eps
index c58c091..4300e2d 100644
--- a/pointprocesses/lecture/pointprocessscetchB.eps
+++ b/pointprocesses/lecture/pointprocessscetchB.eps
@@ -1,7 +1,7 @@
 %!PS-Adobe-2.0 EPSF-2.0
 %%Title: pointprocessscetchB.tex
 %%Creator: gnuplot 4.6 patchlevel 4
-%%CreationDate: Sun Dec  1 14:45:38 2019
+%%CreationDate: Mon Dec  2 10:40:01 2019
 %%DocumentFonts: 
 %%BoundingBox: 50 50 373 237
 %%EndComments
@@ -430,10 +430,10 @@ SDict begin [
   /Title (pointprocessscetchB.tex)
   /Subject (gnuplot plot)
   /Creator (gnuplot 4.6 patchlevel 4)
-  /Author (jan)
+  /Author (benda)
 %  /Producer (gnuplot)
 %  /Keywords ()
-  /CreationDate (Sun Dec  1 14:45:38 2019)
+  /CreationDate (Mon Dec  2 10:40:01 2019)
   /DOCINFO pdfmark
 end
 } ifelse
diff --git a/pointprocesses/lecture/pointprocessscetchB.pdf b/pointprocesses/lecture/pointprocessscetchB.pdf
index 39a9625..8ede969 100644
Binary files a/pointprocesses/lecture/pointprocessscetchB.pdf and b/pointprocesses/lecture/pointprocessscetchB.pdf differ