Means for detecting chaos and hyperchaos in nonlinear electronic circuits. - Konstantine Giannakopoulos; Theodore L. Deliyannis; John D. Hadjidemetriou (DSP, 2002)

A current-mode chaotic oscillator. - George Souliotis; Konstantine Giannakopoulos; Nikos Fragoulis (ISCAS, 2006)

A log-Domain Wave Positive Impedance inverter. - Nikos Fragoulis; George Souliotis; Konstantine Giannakopoulos (J. Circuits Syst. Comput., 2008)

Autonomous 4-D hyperchaotic oscillator and synchronization. - Konstantine Giannakopoulos; Theodore L. Deliyannis (DPS, 2009)

Current-mode wave field programmable analogue arrays. - George Souliotis; Nikos Fragoulis; Konstantine Giannakopoulos; Dimitrios Besiris; Evangelos Zigouris (Int. J. Circuit Theory Appl., 2010)