While there is no formal academic "paper" exclusively titled "ThunderSoft DRM Protection Crack," technical analyses from the reverse-engineering community detail the system's architecture and common bypass methods. Technical Overview of ThunderSoft DRM
You can find general methodologies for bypassing this type of protection in academic security papers: Steal This Movie: Automatically Bypassing DRM Protection thundersoft drm protection crack
The most reliable way to create an unprotected copy of content you have the right to view is through recording: Hardware Capture: While there is no formal academic "paper" exclusively