(or similar titles from late 2000s conferences like International Conference on Computer Games , CGAMES , or IEEE Consumer Electronics ).
Or the from old Nokia Developer forums (2007–2010).
If you'd like, I can extract or summarize the key technical points from those white papers for you.
However, the most (more of an industry retrospective/analysis) is: "Gameloft: The Rise of a Mobile Gaming Empire on Java ME" — often referenced in mobile gaming history blogs and some ACM Computers in Entertainment articles (2006–2010 era).
Here’s an interesting and nostalgic paper that touches on that exact topic, though academic literature on “Nokia Java games 240x320 Gameloft” is rare (most research focuses on mobile gaming history or Java ME engineering). The closest relevant paper is: