Team, Support. “Explicit Eigen Vectors Formulae for Lower Doubly Companion Matrices: Wiwat Wanicharpichat”. Thai Journal of Mathematics 11, no. 2 (August 1, 2013): 261–274. Accessed December 22, 2024. https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/374.