Characterization of accessibility for a class of nonlinear time-delay systems. - Shun-Jie Li; Claude H. Moog; Claudia Califano (CDC/ECC, 2011)

Accessibility of Driftless Single Input Nonlinear Time-Delay Systems. - Claudia Califano; Shun-Jie Li; Claude H. Moog (TDS, 2013)

Controllability of driftless nonlinear time-delay systems. - Claudia Califano; Shun-Jie Li; Claude H. Moog (Syst. Control. Lett., 2013)

On the chained form with delays on the state variables. - Shun-Jie Li; Claudia Califano; Claude H. Moog (ICIA, 2016)