Ivanov, I. (2000) “A method for solving the spectral problem of Hamiltonian matrices with application to the algebraic Riccati equation”, Ann. Sofia Univ. Fac. Math. and Inf, 92, pp. 105–121. Available at: https://stipendii.uni-sofia.bg/index.php/fmi/article/view/258 (Accessed: 23 November 2024).