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4. Yu. N. Rabotnov, Elements of Hereditary Solid Mechanics (Nauka, Moscow, 1977; Mir, Moscow, 1980).
5. W. A. Day, The Thermodynamics of Simple Materials with Fading Memory, Vol. 22 of Springer Tracts in Natural Philosophy (Springer, Berlin, Heidelberg, 1972; Mir, Moscow, 1974).