Geerts A.H.W. Impulsive-smooth behavior in multimode systems. Pt. 1 : State-space and polynomial representations, 1994. - 15 p. - Текст : непосредственный.
Geerts A.H.W. Impulsive-smooth behavior in multimode systems. Pt. 2 : Minimality and equivalence, 1994. - 18 p. - Текст : непосредственный.