HANDY, C. R. Orthonormal polynomial projection quantization: an algebraic eigenenergy bounding method. Acta Polytechnica, [S. l.], v. 62, n. 1, p. 63–79, 2022. DOI: 10.14311/AP.2022.62.0063. Disponível em: https://ojs.cvut.cz/ojs/index.php/ap/article/view/7678. Acesso em: 6 may. 2024.