1. Ladyzhenskaya, O.A., Solonnikov, V.A., and Ural’tseva, N.N., Lineinye i kvazilineinye uravneniya parabolicheskogo tipa (Linear
and Quasilinear Parabolic Type Equations), Moscow: Nauka, 1967.
2. Zhitarashu, N.V., Schauder estimates and solvability of general boundary
value problems for general parabolic systems with discontinuous coefficients, Dokl. Akad. Nauk SSSR, 1966, vol. 169, no. 3,
pp. 511–513.
3. Eidel’man, S.D. and Ivasishen, S.D., Green’s matrix of homogeneous parabolic
boundary value problem for systems with discontinuous coefficients, Dokl. Akad. Nauk SSSR, 1968, vol. 183, no. 4,
pp. 797–800.
4. Drin’, M.M. and Ivasishen, S.D., Green’s matrix of general boundary value
problem for I.G. Petrovskii parabolic system with discontinuous coefficients, Dokl. Akad. Nauk USSR. Ser. A, 1984, no. 11,
pp. 7–10.
5. Lakhtin, Yu.M., Kogan, Ya.D., Shpis, G.I., and Bemer, Z., Teoriya i
tekhnologiya azotirovaniya (Theory and Technology of Nitriding), Moscow:
Metallurgiya, 1992.