1. A. N. Tikhonov and A. A. Samarskii, Equations of Mathematical Physics [in Russian], Nauka, Moscow (1972).
2. L. I. Sedov, Continuum Mechanics, Vol. 2 [in Russian], Nauka, Moscow (1973).
3. M. M. Khasanov and G. T. Bulgakova, Nonlinear and Nonequilibrium Effects in Rheologically Complex Media [in Russian], Inst. Komp. Issled., Moscow–Izhevsk (2003).
4. S. L. Sobolev, “Locally nonequilibrium models of transition processes,” Usp. Fiz. Nauk, 167, No. 10, 1095–1106 (1997).
5. A. A. Kilbas, H. M. Srivastava, and J. J. Trujillo, Theory and Applications of Fractional Differential Equations, Elsevier, Amsterdam (2006).