Importing from Blender causes tangent/normal errors - Unity Answers
Bake Normal space: Camera vs World vs Object vs Tangent - Blender Stack Exchange
PDT Trigonometrical Waves — Blender Manual
How do you convert the world normal to tangential normal? - Materials and Textures - Blender Artists Community
Iyad Ahmed on Twitter: "Blender tip: Height to Normal map Useful for creating normal maps with Blender How it works: convert world space normals to tangent space, map it to range 0..1 #