A parallelizable recursive least squares algorithm for adaptive filtering, with very good tracking properties. - Constantin Papaodysseus; Elias Koukoutsis; Cristos C. Halkias; George Roussopoulos (Int. J. Comput. Math., 1998)

Προηγμένοι αλγόριθμοι ψηφιακής επεξεργασίας σημάτων με έμφαση στη φωνή και τη μουσική - George Roussopoulos (2000)

Quantization Effects and Stabilization of the Fast-Kalman Algorithm. - Constantin Papaodysseus; Constantin Alexiou; George Roussopoulos; Athanasios D. Panagopoulos (EURASIP J. Adv. Signal Process., 2001)

On the automated recognition of seriously distorted musical recordings. - Dimitrios K. Fragoulis; George Roussopoulos; Thanasis Panagopoulos; Constantin Alexiou; Constantin Papaodysseus (IEEE Trans. Signal Process., 2001)

Using a fast RLS adaptive algorithm for efficient speech processing. - Constantin Papaodysseus; George Roussopoulos; Athanasios D. Panagopoulos (Math. Comput. Simul., 2005)

Identification of geometrical shapes in paintings and its application to demonstrate the foundations of geometry in 1650 B.C. - Constantin Papaodysseus; Mihalis Exarhos; Thanasis Panagopoulos; C. Triantafillou; George Roussopoulos; A. Pantazi; Vassilis Loumos; Dimitrios K. Fragoulis; Christos Doumas (IEEE Trans. Image Process., 2005)

Automated classification of piano-guitar notes. - Dimitrios K. Fragoulis; Constantin Papaodysseus; Mihalis Exarhos; George Roussopoulos; Thanasis Panagopoulos; Dimitrios Kamarotos (IEEE Trans. Speech Audio Process., 2006)