maya_mentalray
http://mentalrayformaya.blogspot.jp/
http://www.dfx.co.jp/dftalk/?p=5172
http://blog.taikomatsu.com/2010/05/17/mayamental-ray-ba-shader%E4%BD%BF%E7%94%A8%E3%81%AB%E9%96%A2%E3%81%97%E3%81%A6%E3%81%AE%E3%83%A1%E3%83%A2/
http://www.pixelcg.com/blog/?p=1040
http://www.pixelcg.com/blog/?p=698
http://www.pixelcg.com/blog/?p=848
http://www.pixelcg.com/blog/?p=14
http://www.floze.org/2008/07/six-tuts-on-light-and-shade-part-i.html
http://lesterbanks.com/2014/02/transparent-textures-ambient-occlusion-maya-mental-ray/
http://linghaoli.com/blog/?p=99
http://www.commercial3d.com/tutorials-from-the-burroughs-group/transparency-with-ambient-occlusion-in-mental-ray
http://wiki.bk.tudelft.nl/toi-pedia/Mental_Ray_Ambient_Occlusion_tutorial
http://tocotocotoco.at.webry.info/201403/article_1.html
https://sites.google.com/site/kuromemo/maya-1/chutoriaru/transparencytekusuchawotsukattabaainoanbientookurujon
http://maya-memo.blogzine.jp/blog/cat6693824/