Model-catalog compression for radar target recognition. - Batu Ulug; Stanley C. Ahalt; Rick Mitchell (ICASSP, 1995)

Class separability estimation and incremental learning using boundary methods. - José-Luis Sancho; William E. Pierson; Batu Ulug; Aníbal R. Figueiras-Vidal; Stanley C. Ahalt (Neurocomputing, 2000)