Moment space upper and lower error bounds for digital systems with intersymbol interference. - Kung Yao; Robert M. Tobin (IEEE Trans. Inf. Theory, 1976)

Upper and Lower Error Bounds for Coherent Phase-Shift-Keyed (CPSK) Systems with Cochannel Interference. - Robert M. Tobin; Kung Yao (IEEE Trans. Commun., 1977)