1. S. Abdinazarov, “General boundary value problems for a third-order equation with multiple characteristics,” Differ. Uravn., 17, No. 1, 3–12 (1981).
2. Zh. A. Balkizov, “An analog of the Tricomi problem for the third-order parabolic-hyperbolic equation with the Gellerstedt operator in the hyperbolicity domain,” Dokl. Adyg. (Cherkes.) Akad. Nauk, 16, No. 2, 20–27 (2014).
3. Zh. A. Balkizov, “Boundary-value problems for a third-order mixed-type equation with the Gellerstedt operator in the hyperbolic part,” Izv. Kabardino-Balkar. Univ., 1, No. 1, 21–33 (2011).
4. Zh. A. Balkizov, “Nonlocal boundary-value problem for a model third-order parabolic-hyperbolic equation,” Dokl. Adyg. (Cherkes.) Akad. Nauk, 17, No. 4, 9–20 (2015).
5. Zh. A. Balkizov, “A boundary-value problem for a hyperbolic equation that degenerates inside a domain,” Izv. Vyssh. Ucheb. Zaved. Sev.-Kav. Region. Estestv. Nauki, No. 1, 5–10 (2016).