1Haixing Zhao,Xueliang Li,Shenggui Zhang,Ruying Liu.On the minimum real roots of theσ-polynomials and chromatic uniqueness ofgraphs[].Discrete Mathematics.2004
2R.-Y.Liu.Chromatic uniqueness of complementary graph ofPq-1[].JMathResExplsition(.1994
3Ruying Liu.Adjoint Polynomials and chromatically u-nique graphs[].J Discrete Math.1997
4Haixing ZHao.Chromaticity and adjoint polynomials of graphsk[]..
