diff --git a/draw2dgl/notes.md b/draw2dgl/notes.md
index f6a91ee..0c21456 100644
--- a/draw2dgl/notes.md
+++ b/draw2dgl/notes.md
@@ -1,5 +1,6 @@
 Rendering Vector Art OpenGl
 References:
-https://www.youtube.com/watch?v=K5u8ZZBWSdw
-http://http.developer.nvidia.com/GPUGems3/gpugems3_ch25.html
-http://research.microsoft.com/en-us/um/people/cloop/loopblinn05.pdf
+* https://www.youtube.com/watch?v=K5u8ZZBWSdw
+* http://http.developer.nvidia.com/GPUGems3/gpugems3_ch25.html
+* http://research.microsoft.com/en-us/um/people/cloop/loopblinn05.pdf
+* https://github.com/openframeworks/openFrameworks/issues/1190