R. Y. Rasulov, V. R. Rasulov, F. U. Kasimov, M. K. Nasirov, and I. A. Muminov, “On the Theory of the Intraband Mechanism of Single-Photon Absorption in Semiconductors, Taking into Account the Effect of Coherent Saturation”, East Eur. J. Phys., no. 2, pp. 441-451, Jun. 2025.