Oliveira, Weslley Florentino de, and Giancarlo Queiroz Pellegrino. “Characterization of Spectrum and Eigenvectors of the Schrödinger Operator With Chaotic Potentials”. Trends in Computational and Applied Mathematics, vol. 15, no. 2, Sept. 2014, doi:10.5540/tema.2014.015.02.0203.