  Stability and control of a non-linear system represent an important system
configuration that frequently arises in practical engineering. Stability covers
a vast range of systems that do not obey the superposition principle and
applies to more real-world systems because all real control systems are
non-linear. For efficient stabilization of these systems, a great number of
researches have been proposed. This paper surveys some well-known facts as well
as some recent developments and different strategies for the topic of
stabilization of non-linear systems by output feedback control techniques.
