So. Alexeyev et Mv. Pomazanov, BLACK-HOLE SOLUTIONS WITH DILATONIC HAIR IN HIGHER CURVATURE GRAVITY, Physical review. D. Particles and fields, 55(4), 1997, pp. 2110-2118
A new numerical integration method for examining the interior structur
e of a black hole is proposed. A low-energy string action, containing
graviton, dilaton, and Gauss-Bonnet contributions is considered. Four-
dimensional black hole solutions are investigated inside and outside t
he event horizon. Thermodynamical properties of this solution are also
studied.