Conjugate transformations preserving the general overflow-stability property of 2-D digital filters
T. Aboulnasr, Moustafa M. Fahmy · IEEE Transactions on Circuits and Systems · 1985
This paper presents a nondiagonal transformation that preserves the general sufficient condition for overflow-stability given in [1]. Since the transformation is not restricted to be diagonal, it could be used to improve some of the nonlinear performance prior to scaling.