Janicki J. Stability of subharmonics and escape phenomena in the twin-well potential duffing system / J.Janicki,W.Szemplinska-Stupnicka, 1993. - 66 p. - Текст : непосредственный.
Szemplinska-Stupnicka W. approximate analytical methods in the study of transition to chaotic motion in nonlinear oscillators / W.Szemplinska-Stupnicka, 1991. - 55 p. - Текст : непосредственный.
Szemplinska-Stupnicka W. Bifurcations phenomena in a nonlinear oscillator : approximate analytical studies versus computer simulation results / W.Szemplinska-Stupnicka,J.Rudowski, 1992. - 40 s. - Текст : непосредственный.
Szemplinska-Stupnicka W. Steady states in the twin-well potential oscillator:momputer simulations and approximate analytical studies / W.Szemplinska-Stupnicka,J.Rudowski, 1992. - 50 p. - Текст : непосредственный.