NORVIDAS, Saulius. On a uniqueness theorem for characteristic functions. Nonlinear Analysis: Modelling and Control, [S. l.], v. 22, n. 3, p. 412–420, 2017. DOI: 10.15388/NA.2017.3.9. Disponível em: https://www.journals.vu.lt/nonlinear-analysis/article/view/13395.. Acesso em: 21 jul. 2024.