Shanina, Z. “Dispersionless Limit of the Konno-Oono Equation”. BULLETIN OF THE L.N. GUMILYOV EURASIAN NATIONAL UNIVERSITY. PHYSICS. ASTRONOMY SERIES, vol. 129, no. 4, July 2022, pp. 93-98, doi:10.32523/2616-6836-2019-129-4-93-98.