Index: gap-gapdoc-1.6.9/3k+1/3k+1.bib
===================================================================
--- gap-gapdoc-1.6.9.orig/3k+1/3k+1.bib
+++ gap-gapdoc-1.6.9/3k+1/3k+1.bib
@@ -1,7 +1,7 @@
 % 3k+1 bibliography
 
 @book {Wi98,
-    author = {Wirsching, Gnther J.},
+    author = {Wirsching, Günther J.},
      title = {The dynamical system generated by the $3n+1$ function},
  publisher = {Springer-Verlag},
     series = {Lecture Notes in Mathematics},
