Multivariable MRAC using high frequency gain matrix factorization. - Alvaro K. Imai; Ramon R. Costa; Liu Hsu; Gang Tao; Petar V. Kokotovic (CDC, 2001)

Adaptive backstepping control design for MIMO plants using factorization. - Ramon R. Costa; Liu Hsu; Alvaro K. Imai; Gang Tao (ACC, 2002)

Multivariable adaptive control with transient overparametrization. - Liu Hsu; Ramon R. Costa; Alvaro K. Imai (CDC, 2003)

Lyapunov-based adaptive control of MIMO systems. - Ramon R. Costa; Liu Hsu; Alvaro K. Imai; Petar V. Kokotovic (Autom., 2003)

Multivariable adaptive control using high-frequency gain matrix factorization. - Alvaro K. Imai; Ramon R. Costa; Liu Hsu; Gang Tao; Petar V. Kokotovic (IEEE Trans. Autom. Control., 2004)