Newton's algorithm in Euclidean Jordan algebras, with applications to robotics. - Uwe Helmke; Sandra Ricardo; Shintaro Yoshizawa (Commun. Inf. Syst., 2002)

Equivalence and equivariants of mechanical control systems. - Witold Respondek; Sandra Ricardo (CDC/ECC, 2011)

Equivariants of Mechanical Control Systems. - Witold Respondek; Sandra Ricardo (SIAM J. Control. Optim., 2013)