Vacuum non singular black hole solutions in tetrad theory of gravitation
Starting from a spherically symmetric tetrand with three unknown functions of the radial coordinate and assuming a specific form of the vacuum stress-energy momentum tensor, a general solution of Møller's field equations in case of spherically symmetric nonsingular black holes is derived. The general solution is characterized by an arbitrary function and two constants of integration. The previously obtained solutions are verified as special cases of the general solution. The associated metric of the general solution gives no more than the spherically symmetric nonsingular black hole obtained before. The energy content of the general solution depends on the asymptotic behavior of the arbitrary function, and is different from the standard one.
Nashed, Gamal G.L., "Vacuum non singular black hole solutions in tetrad theory of gravitation" (2002). Centre for Theoretical Physics. 172.