1. Dehmer M (2006) On the location of zeros of complex polynomials. Journal of Inequalities in Pure and Applied Mathematics, Vol 7 (1)..
2. Heitzinger W, Troch WI, Valentin G (1985) Praxis nichtlinearer Gleichungen. Carl Hanser Verlag. München, Wien, Germany, Austria.
3. Mignotte M, Stefanescu D (1999) Polynomials: An Algorithmic Approach. Discrete Mathematics and Theoretical Computer Science. Springer. Singapore.
4. Prasolov VV (2004) Polynomials. Springer.
5. Rahman QI, Schmeisser G (2002) Analytic Theory of Polynomials. Critical Points, Zeros and Extremal Properties. Clarendon Press. Oxford, UK.