diff --git a/docs/src/index.md b/docs/src/index.md
index ed44045..0c18c62 100644
--- a/docs/src/index.md
+++ b/docs/src/index.md
@@ -20,14 +20,14 @@ the target grid is two-dimensional, resulting into  intuitively interpretable ma
 
 For more details see Kohonen's papers, such as
 
-1) Teuvo Kohonen, *Biological Cybernetics,* **43** (1982) p. 59-69   
+* Teuvo Kohonen, *Biological Cybernetics,* **43** (1982) p. 59-69   
 
-2) Teuvo Kohonen, *Biological Cybernetics,* **44** (1982) p. 135-140      
+* Teuvo Kohonen, *Biological Cybernetics,* **44** (1982) p. 135-140      
 
 Technical details and background can be found in Kohonen's still relevant
 technical report:
 
-3) Teuvo Kohonen, Jussi Hynninen, Jari Kangas, and Jorma Laaksonen, *SOM_PAK: The Self-Organizing Map Program Package.* Technical Report A31, Helsinki University of Technology, Laboratory of Computer and Information Science, FIN-02150 Espoo, Finland, 1996. <http://www.cis.hut.fi/research/papers/som_tr96.ps.Z>
+* Teuvo Kohonen, Jussi Hynninen, Jari Kangas, and Jorma Laaksonen, *SOM_PAK: The Self-Organizing Map Program Package.* Technical Report A31, Helsinki University of Technology, Laboratory of Computer and Information Science, FIN-02150 Espoo, Finland, 1996. <http://www.cis.hut.fi/research/papers/som_tr96.ps.Z>
 
 
 ## Installation