Light Projection Technical Documentation available?

I was casually browsing youtube until this caught my eye:





Alexander Sannikov was present at Exilecon 2019:
https://www.youtube.com/watch?v=whyJzrVEgVc

Alexander Sannikov, senior programmer at GGG has a PHD in Physics from the Moscow State University and has extensive knowledge about Smoothed Particle Hydrodynamics, Finite Element techniques and physics game engines.

Grégoire Naisse is a Belgian who got his PHD in math at UCL (Université Catholique de Louvain) and a quick google gets me his (in my eyes) impressive website:
https://perso.uclouvain.be/gregoire.naisse/softwares.html

Looking at their publications I did not find anything related to the work applied to the physics engine of GGG.