Some papers about Source Engine. Go to Wiki page to see them.
There are two documents available for now.
- Source BSP File Format JP
A Japanese translation of Source BSP File Format in Valve Developer Community Wiki.
Valve Developer Community WikiにあるSource BSP File Formatの日本語訳です。 - Garry's Mod Physics
This page describes how physics works in Garry's Mod. - Garry's Mod Prediction
Some quick notes for the prediction techniques.