1. N. E. Friedmann, Quasilinear heat flow, Trans. ASME 80, 635–645 (1958)
2. A. V. Luikov, Analytical heat diffusion theory, trans, ed. J. P. Hartnett, Academic Press, New York, 1968
3. Asymptotic behaviour of temperature profiles of a class of nonlinear heat conduction problems;Peletier, L. A.;Quart. J. Mech. Appl. Math.,1970