Frequency-hopped multilevel frequency shift keying spread spectrum for mobile radio communication systems (Ph.D. Thesis abstr.). - Rushdi H. Muammar (IEEE Trans. Inf. Theory, 1983)

Land mobile radio systems - A tutorial exposition. - Someshwar C. Gupta; R. Viswanathan; Rushdi H. Muammar (IEEE Commun. Mag., 1985)