The energy of a dyonic dilaton black hole

We calculate the energy distribution of a dyonic dilaton black hole by using the Tolman's energy-momentum pseudotensor. All the calculations are performed with approximation in quasi-Cartesian coordinates. The energy distribution of the dyonic dilaton black hole depends on the mass M, the electric charge Qe, the magnetic charge Qm and asymptotic value of the dilaton Φ0. We get he same result as obtained by Y-Ching Yang, Ching-Tzung Yeh, Rue-Ron Hsu and Chin-Rong Lee by using the Einstein's prescription. (Authors)