Try using utf8x input encoding.
diff --git a/Doc/conf.py b/Doc/conf.py
index 7dd7956..f2e6674 100644
--- a/Doc/conf.py
+++ b/Doc/conf.py
@@ -145,6 +145,8 @@
 # Documents to append as an appendix to all manuals.
 latex_appendices = ['glossary', 'about', 'license', 'copyright']
 
+latex_elements = {'inputenc': '\\usepackage[utf8x]{inputenc}'}
+
 # Options for the coverage checker
 # --------------------------------