Fractal representations of planar shapes. - Wladyslaw Skarbek; Krystian Ignasiak; Miloud Ghuwar (DGCI, 1996)

Local Subspace Method for Pattern Recognition. - Wladyslaw Skarbek; Miloud Ghuwar; Krystian Ignasiak (CAIP, 1997)

Invariant Reference Points Methodology and Applications. - Krystian Ignasiak; Wladyslaw Skarbek; Miloud Ghuwar (CAIP, 1999)