  Sufficient conditions are established for sampled-data feedback global
asymptotic stabilization for nonlinear autonomous systems. One of our main
results is an extension of the well known Artstein-Sontag theorem on feedback
stabilization concerning affine in the control systems. A second aim of the
present work is to provide sufficient conditions for sampled-data feedback
asymptotic stabilization for two interconnected nonlinear systems. Lie
algebraic sufficient conditions are derived for the case of affine in the
control interconnected systems without drift terms.
