Classification of Impedance Traces. - Helen C. Shen; R. M. Pilkey (IEEE Trans. Syst. Man Cybern., 1987)

An Adaptive Approach to Feature Selection in Pattern Recognition. - Helen C. Shen; R. M. Pilkey (Int. J. Pattern Recognit. Artif. Intell., 1990)

An adaptive Approach to Feature Selection as Applied to a texture Classification Problem. - Helen C. Shen; R. M. Pilkey (Pattern Recognition: Architectures, Algorithms and Applications, 1991)