Here are some of the original papers for the technique. Although I believe there have been some updates and improvements since. https://hal.inria.fr/hal-018247

Here are some of the original papers for the technique. Although I believe there have been some updates and improvements since. https://hal.inria.fr/hal-01824773/file/HPN2018.pdf https://hal.inria.fr/hal-01824773/file/HPN2018.pdf https://www.jcgt.org/published/0008/04/02/paper.pdf https://www.jcgt.org/published/0008/04/02/paper.pdf