Nonlinear dynamics of a nonideal sigma-delta modulator with periodic input. - Emer Condon; Orla Feely (ISCAS (4), 2004)

On the steady state behaviour of an nth-order class of nonlinear mappings. - Emer Condon; Paul F. Curran; Ketan Mistry; Orla Feely (ECCTD, 2005)

Driven interval shift dynamics in sigma-delta modulators and phase-locked loops. - Alexey Teplinsky; Emer Condon; Orla Feely (IEEE Trans. Circuits Syst. I Regul. Pap., 2005)