@inbook{beghi1996-1, author="A. Beghi and A. Lepschy and U. Viaro", title="Stability Theory Proceedings of Hurwitz Centenary Conference", year="1996", pages="1-10", address="BASEL -- CHE", chapter="The Hurwitz matrix and the computation of second-order information indices", publisher="Birkhauser Verlag", note="International Series of Numerical Mathematics vol. 121" }