DOEBNER, H.-D. On Global and Nonlinear Symmetries in Quantum Mechanics. Acta Polytechnica, [S. l.], v. 50, n. 3, 2010. DOI: 10.14311/1201. Disponível em: https://ojst.is.cvut.cz/ojs/index.php/ap/article/view/1201.. Acesso em: 29 may. 2025.