An analog interpretation of compression for digital communication systems. - John M. Lervik; Tor A. Ramstad (ICASSP (5), 1994)

Optimal Entropy Coding in Image Subband Coders. - John M. Lervik; Tor A. Ramstad (ICIP (2), 1994)

Optimality of multiple entropy coder systems for nonstationary sources modelled by a mixture distribution. - John M. Lervik; Tor A. Ramstad (ICASSP, 1996)

Survey of odd and even length filters in tree-structured filter banks for subband image compression. - Ilangko Balasingham; Tor A. Ramstad; John M. Lervik (ICASSP, 1997)

Jointly optimal classification and uniform threshold quantization in entropy constrained subband image coding. - Are Hjørungnes; John M. Lervik (ICASSP, 1997)

Robust subband image coding for waveform channels with optimum power- and bandwidth- allocation. - John M. Lervik; Thomas R. Fischer (ICASSP, 1997)

Lossless image compression using integer coefficient filter banks and class-wise arithmetic coding. - Ilangko Balasingham; John M. Lervik; Tor A. Ramstad (ICASSP, 1998)