M. Shih et J. Wu, 2 RESULTS ON THE SPECTRAL-RADIUS OF A COMPLEX MATRIX, WITH APPLICATION TO INSTABILITY, Linear algebra and its applications, 222, 1995, pp. 147-153
We prove two results on the spectral radius of a complex matrix. By th
e application of one of the results, we give a more direct proof of a
known theorem concerning the determination of the instability by the l
inear approximation.