LIUL, M. P.; SHEVCHENKO, S. N. Rate-equation approach for multi-level quantum systems. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, Харків, Україна, v. 49, n. 1, p. 102–108, 2023. DOI: 10.1063/10.0016482. Disponível em: http://80.92.230.95/index.php/fnt/article/view/8955. Acesso em: 20 чер. 2025.