Cristel-Loic Tisse from DxO put his EIC 2008 paper on-line:
C.Tisse, F.Guichard & F.Cao “Does Resolution Really Increase Image Quality”, SPIE Proc. of conference on Electronic Imaging, San Jose - US, January 2008.
The paper discusses image quality scaling with pixel size. The main idea is that small pixels designers should solve quite a few chalenges to deliver a real improvement in image quality.