Boundary surfaces in sequential circuits. - Viktor Spány; Ladislav Pivka (Int. J. Circuit Theory Appl., 1990)

Boundary surfaces and Basin bifurcations in Chua's Circuit. - Ladislav Pivka; Viktor Spány (Chua's Circuit, 1993)

Boundary Surfaces and Basin bifurcations in Chua's Circuit. - Ladislav Pivka; Viktor Spány (J. Circuits Syst. Comput., 1993)

Chua's Singularities: Great MIRACLE in Circuit Theory. - Viktor Spány; Pavol Galajda; Milan Guzan; Ladislav Pivka; Martin Olejár (Int. J. Bifurc. Chaos, 2010)

Analogue Realization of Fractional-Order Dynamical Systems. - Lubomír Dorcák; Juraj Valsa; Emmanuel A. Gonzalez; Ján Terpák; Ivo Petrás; Ladislav Pivka (Entropy, 2013)