GOZHENKO, V. V. On Pendry’s Effective Electron Mass. Ukrainian Journal of Physics, [S. l.], v. 60, n. 10, p. 1013, 2019. DOI: 10.15407/ujpe60.10.1013. Disponível em: https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2019158. Acesso em: 16 may. 2021.