In recent years there has been growing interest in the descriptive analysis of l -order time invariant linear dynamical system x l = A l system x l = A l where A i are square complex matrices and x i denotes the i-th derivative of x. We are interested to mesure the minimum number of controls B that are needed in order to make
Garcia-Planas, M.I. Analizing exact controllability of l-order linear ystems. "WSEAS TRANSACTIONS on SYSTEMS and CONTROL", Maig 2017, vol. 12, p. 232-239.