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src/docs/asciidoc/jme3/beginner/hello_material.adoc

@@ -385,7 +385,7 @@ See also
 *  <<jme3/intermediate/how_to_use_materials#,How to Use Materials>>
 *  <<sdk/material_editing#,Material Editing>>
 *  link:https://hub.jmonkeyengine.org/t/jmonkeyengine3-material-system-full-explanation/12947[Materials] forum thread
-*  link:https://github.com/jMonkeyEngine/wiki/blob/master/src/docs/resources/tutorials/material/jME3_materials.pdf[jME3 Materials documentation (PDF)]
+*  link:http://nbviewer.jupyter.org/github/jMonkeyEngine/wiki/blob/master/src/docs/resources/tutorials/material/jME3_materials.pdf[jME3 Materials documentation (PDF)]
 *  link:http://www.youtube.com/watch?v=Feu3-mrpolc[Video Tutorial: Editing and Assigning Materials to Models in jMonkeyEngine SDK (from 2010, is there a newer one?]
 *  link:https://www.blender.org/support/tutorials/[Creating textures in Blender]
 *  link:http://www.shaders.co.uk/ifw2_textures/whatsin10.htm[Various Material screenshots] (Not done with JME3, this is just to show the fantastic range of Material parameters in the hands of an expert, until we have a JME3 demo for it.)