1. J. Bergh and J. Löfström, Interpolation Spaces. Introduction [Russian translation], Mir, Moscow (1980).
2. J. Peetre and G. Sparr, “Interpolation of normed Abelian groups,” Ann. Mat. Pura Appl. (4),92, No. 4, 217–262 (1972).
3. S. G. Kreîn, Yu. I. Petunin, and E. M. Semënov, Interpolation of Linear Operators [in Russian], Nauka, Moscow (1978).
4. V. I. Ovchinnikov, “The method of orbits in interpolation theory,” Math. Rep.,1, No. 2, 349–515 (1984).
5. B. S. Mityagin, “An interpolation theorem for modular spaces,” Mat. Sb.,66, No. 4, 473–482 (1965).