Two-dimensional almost-Riemannian structures with tangency points. - Andrei A. Agrachev; Ugo V. Boscain; Gregoire Charlot; Roberta Ghezzi; Mario Sigalotti (CDC, 2009)

Regularization of Chattering Phenomena via Bounded Variation Controls. - Marco Caponigro; Roberta Ghezzi; Benedetto Piccoli; Emmanuel Trélat (IEEE Trans. Autom. Control., 2018)