Сагидуллаева, Ж. . “On the Gauge Equivalence of the Two-Layer M-XCIX Equation and the Two-Component Schr¨odinger-Maxwell-Bloch Equation”. BULLETIN OF THE L.N. GUMILYOV EURASIAN NATIONAL UNIVERSITY. PHYSICS. ASTRONOMY SERIES, vol. 124, no. 3, July 2022, pp. 41-46, doi:10.32523/2616-6836-2018-124-3-41-46.