T. R. Cameron. The determinant from signed volume to the Laplace expansion, Amer. Math. Monthly, To Appear.
T. R. Cameron. On the reduction of matrix polynomials to Hessenberg form, Electron. J. Linear Algebra, 31: 321-334, 2016, doi.org/10.13001/1081-3810.3011
T. R. Cameron. Spectral bounds for matrix polynomials with unitary coefficients, Electron. J. Linear Algebra, 30: 585-591, 2015, doi.org/10.13001/1081-3810.2911