Documentation for the gaze estimation model

[beji02]

I am interested to find the implementation details of the gaze estimation model. I cannot find any reference to a paper explaining it? Can you help? Thanks.

[Wovchena]

@a-a-egorovich, can you share it?

[andreyanufr]

We had some list of papers which we used, but I can not remember it. Some details you can find in #3856