Simultaneous mapping of interactions between scientific and technological knowledge bases: The case of space communications. - E. Hassan (J. Assoc. Inf. Sci. Technol., 2003)

Radial Zernike Moment Invariants. - Saeid Belkasim; E. Hassan; T. Obeidi (CIT, 2004)

Explicit invariance of Cartesian Zernike moments. - Saeid Belkasim; E. Hassan; T. Obeidi (Pattern Recognit. Lett., 2007)