Two-channel IIR QMF banks with approximately linear-phase analysis and synthesis filters. - Mahes M. Ekanayake; Kamal Premaratne (IEEE Trans. Signal Process., 1995)

Two-dimensional delta-operator formulated discrete-time systems: state-space realization and its coefficient sensitivity properties. - Kamal Premaratne; Mahes M. Ekanayake; J. I. Suarez; Peter H. Bauer (IEEE Trans. Signal Process., 1998)

Stability of discrete-time systems with time-varying delays. - Mahes M. Ekanayake; Kamal Premaratne; Christos Douligeris; Peter H. Bauer (ACC, 2001)