[DirectX 8.1 C/C++ Programmer's Reference] Indexed Vertex Blending (100%)
DirectX 8.1 (C++) > DirectX Graphics > Programmers Guide > Advanced Topics
[DirectX October 2006 Documentation] Indexed Vertex Blending (40.1654411764706%)
DirectX Graphics > Direct3D 9 > Programming Guide > Advanced Topics > Vertex Pipeline > Geometry Blending