Maximum A Posteriori Estimator for Suppression of Interchannel Interference in FM Receivers. - Tippure S. Sundresh; Frank A. Cassara; Harry Schachter (IEEE Trans. Commun., 1977)

Acquisition Behavior of the Cross-Coupled Phase-Locked Loop FM Demodulator. - Frank A. Cassara; Harry Schachter; Gerald H. Simowitz (IEEE Trans. Commun., 1980)

Cross-Coupled Phase-Locked Loop with Closed Loop Amplitude Control. - Yeheskel Bar-Ness; Frank A. Cassara; Harry Schachter; Robert A. DiFazio (IEEE Trans. Commun., 1984)