Жасыбаева, М. ., & Нугманова, Г. (2022). Spin system equivalent to the integrable Fokas-Lenells equation. BULLETIN OF THE L.N. GUMILYOV EURASIAN NATIONAL UNIVERSITY. PHYSICS. ASTRONOMY SERIES, 122(1), 53–57. https://doi.org/10.32523/2616-6836-2018-122-1-53-57