Superluminal light group velocity in tapered optical microfibers. Periodicals of Engineering and Natural Sciences, [S. l.], v. 10, n. 2, p. 109–113, 2022. DOI: 10.21533/pen.v10.i2.585. Disponível em: https://pen.ius.edu.ba/index.php/pen/article/view/585. Acesso em: 3 jul. 2026.