A wide class of solutions, endowed with stationary and axial symmetries, of the Einstein-Maxwell-dilaton-axion equations are explicitly given. The chosen coordinate system is such that the structural functions are expressible as a ratio of polynomials of, at most, second degree. It is equipped with six continuous free parameters and two discrete constants. In particular, it contains the generalized Sen black hole with mass, Newman-Unti-Tamburino parameter, charge, angular momentum, dilaton and axion limiting parameters, and related magnetic, dilaton, and axion charges.

• Received 31 October 1994

DOI:https://doi.org/10.1103/PhysRevLett.74.1276