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diff --git a/resources.mdwn b/resources.mdwn
index 444fa4b7710f90119465a064aa15b9f3fcab8d47..1f5aad6a1d6053b63d3d637e3e49756eece2f554 100644 (file)
--- a/resources.mdwn
+++ b/resources.mdwn
@@ -461,3 +461,5 @@ This list auto-generated from a page tag "standards":
 
 * <https://github.com/julialongtin/hslice/blob/master/Graphics/Slicer/Math/GeometricAlgebra.hs>
 * <https://github.com/julialongtin/hslice/blob/master/Graphics/Slicer/Math/PGA.hs>
+* <https://arxiv.org/pdf/1501.06511.pdf>
+* <https://bivector.net/index.html>