http://www.momentum-studio.com/tutorial/mental-ray-shadow-catcher-tutorial/
http://mentalraytips.blogspot.com.au/2007/10/production-shader-examples.html
http://www.mentalimages.com/fileadmin/user_upload/PDF/production.pdf
http://www.mentalimages.com/fileadmin/user_upload/PDF/arch_and_design.pdf
http://cg.tutsplus.com/tutorials/autodesk-maya/composite-a-3d-object-into-video-footage-with-boujou-maya-and-after-effects/
Hidden MR production shaders
http://www.the-area.com/forum/autodesk-3ds-max/lighting—rendering/lighting-for-compositing/