System, Image Processing: The Role of a Virtual Observer in an Automatic. - Bror O. Hultgren (PICS, 1998)

Polaroid Image Quality Methodology. - Julian G. Bullitt; Bror O. Hultgren (PICS, 2003)

One-Step Measurement of Granularity Versus Density, Graininess, and Micro-Uniformity. - Dirk W. Hertel; Bror O. Hultgren (PICS, 2003)