WEILAND, J.; RAFIQ, T. Effects of Nonlinearities in Physics and Demography. Ukrainian Journal of Physics, [S. l.], v. 67, n. 8, p. 574, 2022. DOI: 10.15407/ujpe67.8.574. Disponível em: https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2022508. Acesso em: 6 may. 2024.