How much non-coding DNA do eukaryotes require?

Recommended citation: Ahnert SE, Fink TMA and Zinovyev A. How much non-coding DNA do eukaryotes require?. 2008. Journal of Theoretical Biology 252(4):587-592 https://www.sciencedirect.com/science/article/pii/S002251930800057X?via%3Dihub