There isn't an official academic "paper" on a Lumion 12.0 patch, as software updates are typically documented through professional release notes and knowledge base articles rather than formal research papers.
If you are trying to fix a specific rendering issue where an object appears hollow, could you describe the CAD software you are using (e.g., Revit, SketchUp) and where the "solid" look is failing? Lumion 12.0.1.1 Hotfix (only for Lumion 12.0.1 users) lumion 120 patch
However, for a professional or technical overview of the Lumion 12 release and its subsequent critical updates (patches), you can refer to the following official documentation from the Lumion Knowledge Base: Lumion 12.0 Primary Release Documentation There isn't an official academic "paper" on a Lumion 12
: If you haven't upgraded yet, you can test these features with a 14-day free trial available on the Lumion Pro site on one of the new lighting features? lumion 120 patch