SIRKELI, V.P.; HARTNAGEL, H.L. ZnO-based terahertz quantum cascade lasers. Opto-Electronics Review, [S. l.], v. 27, n. 2, p. 119–122, 2026. Disponível em: https://wydawnictwo.pan.pl/index.php/opelre/article/view/645. Acesso em: 17 apr. 2026.