Are the coefficients of a polynomial well-conditioned functions of its roots? Frank Uhlig — 1992 Numerische Mathematik
Partial convergence and sign convergence of matrix powers via eigen c-ads. Uhlig, Frank — 1998 ELA. The Electronic Journal of Linear Algebra [electronic only]
A method for the inverse numerical range problem. Chorianopoulos, Christos; Psarrakos, Panayiotis; Uhlig, Frank — 2010 ELA. The Electronic Journal of Linear Algebra [electronic only]
Numerical ranges of an operator on an indefinite inner product space. Li, Chi-Kwong; Tsing, Nam-Kui; Uhlig, Frank — 1996 ELA. The Electronic Journal of Linear Algebra [electronic only]