An algorithmic procedure for designing hybrid FIR/IIR digital filters. - Michael R. Campbell; Ronald E. Crochiere; Lawrence R. Rabiner (Bell Syst. Tech. J., 1976)

A Large Time-Bandwidth Product Signaling Technique for Nonwhite Noise Channels. - Michael R. Campbell; Lawrence E. Hoff; Rodger E. Ziemer (IEEE Trans. Commun., 1976)