G. A. Dyikanov, K. Kh. Shabadikov, T. K. Yuldashev (Iuldashev), “On the inverse initial-value problem for a quasilinear differential equation with a high-degree multidimensional Whitham operator”, Itogi Nauki i Tekhniki. Sovrem. Mat. Pril. Temat. Obz., 201 (2021), 44–52
