Some references

Kollig and Keller, Efficient Multidimensional Sampling

www.uni-kl.de/AG-Heinrich/EMS.pdf

Monte Carlo Light Tracing With Direct Computation Of Pixel Intensities

http://graphics.cs.kuleuven.be/publications/MCLTWDCOPI/ 

Strictly Deterministic Sampling Methods in Computer Graphics 

http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.88.7937 

Path Tracing:

http://citeseer.ist.psu.edu/344088.html 

Quasi-Monte Carlo light transport simulation by efficient ray tracing

http://vts.uni-ulm.de/docs/2008/6265/vts_6265_8393.pdf 

Fast subsurface scattering surface shader.

http://publications.dice.se/attachments/Colin_BarreBrisebois_Programming_ApproximatingTranslucency.pdf

http://publications.dice.se/attachments/Colin_BarreBrisebois_Programming_ApproximatingTranslucency.pptx 

QMC: 

http://www-stat.stanford.edu/~owen/reports/siggraph03.pdf

https://lirias.kuleuven.be/bitstream/123456789/131168/1/mcm2005_bartv.pdf 

 

Fast floor:

http://www.masm32.com/board/index.php?topic=9515.msg78719#msg78719

Fast log2 and pow2:

Production Rendering, Springer-Verlag, 2004

and

http://www.dctsystems.co.uk/Software/power.c

Fast square root:

http://en.wikipedia.org/wiki/Methods_of_computing_square_roots

Fast reciprocal square root:

http://www.lomont.org/Math/Papers/2003/InvSqrt.pdf 

 

SSS:

http://graphics.ucsd.edu/~henrik/papers/bssrdf/

 

IBL:

http://www.igorsklyar.com/system/documents/papers/4/fiscourse.comp.pdf

http://www.pbrt.org/plugins/infinitesample.pdf

 

Path differentials:

http://graphics.cs.kuleuven.be/publications/phdSuykens/suykens_7.pdf

 

Triangle intersection using SSE4:

http://igad.nhtv.nl/~bikker/files/faster.pdf