1. M.S. Agranovich, M.I. Vishik, Elliptic problems with a parameter and parabolic problems of general type. Uspekhi Mat. Nauk 19(117) , 53–161 (1964) (English: Russ. Math. Surv. 19, 53–157 (1964))
2. O.V. Besov, V.P. Il’in, S.M. Nikolskiı̌, Integral Representation of Functions and Theorems of Imbedding (Nauka, Moscow, 1975), 480 p.
3. I.V. Denisova, The motion of a drop in a flow of a liquid. Dinamika Sploshn. Sredy SOAN SSSR 93/94, 32–37 (1989) (in Russian)
4. I.V. Denisova, Problem on unsteady motion of a drop in a viscous incompressible flow. Thesis for the Degree of Kandidat in Phys.-Math. Sci., Leningrad: LOMI AN SSSR (1989) (manual) 134 p. (in Russian)
5. I.V. Denisova, A priori estimates of the solution of a linear time dependent problem connected with the motion of a drop in a fluid medium. Trudy Mat. Inst. Steklov. 188, 3–21 (1990) (in Russian) (English transl. in Proc. Steklov Inst. Math. 3, 1–24) (1991)