References
- R.S. Varga, Gersgorin and His Circles, Springer Series in Computational Mathematics, vol. 36, 2004.
- L.J. Cvetkovic,V.Kostic, R. Varga, A new Gersgorin-type eigenvalue inclusion set, ETNA 18 (2004) 73-80.
- L.J. Cvetkovic,V.Kostic, Between Gersgorin and minimal Gersgorin sets, Journal of Computational and Applied Mathematics 196(2006) 452-458. https://doi.org/10.1016/j.cam.2005.09.012