M. A. Evdokimov, V. V. Stulin, “Analytic solution to cyclic contact heat exchange problems for a system of two flat bodies”, Vestn. Samar. Gos. Tekhn. Univ., Ser. Fiz.-Mat. Nauki [J. Samara State Tech. Univ., Ser. Phys. Math. Sci.], 1(16) (2008), 119–129
