Integrated image information management: research issues. - Rajiv Mehrotra; William E. Pierson (Visual Information Processing, 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)