However, given the context of DOOM and "interesting papers," you are likely looking for the landmark research on the and its revolutionary use of Binary Space Partitioning (BSP) .
This paper and the related technical documents explain how DOOM achieved real-time 3D rendering on 1993 hardware by: DOOM.part08.rar
The most famous "interesting paper" related to this topic is: However, given the context of DOOM and "interesting
: Optimizing how floors and ceilings were rendered to save processing power. : Avoiding slow floating-point calculations
If you are looking for a deep dive into the code and architecture, the provides a comprehensive breakdown of the engine's internal logic, while Fabien Sanglard's Game Engine Black Book: DOOM is widely considered the ultimate "paper" or book on how the technical magic of DOOM was achieved.
: Avoiding slow floating-point calculations, which was critical for the CPUs of that era.
: Using BSP trees to split a 2D map into sub-sectors, allowing the engine to determine which walls to draw first without sorting every frame.