An approximate global stationary metric with axial symmetry for a perfect fluid with equation of state µ+(1–n)p = µ0: Exterior metricJ.E. Cuchí, A. Gil–Rivero, A. Molina and E. RuizEAS Publications Series, 30 (2008) 315-318DOI: https://doi.org/10.1051/eas:0830052
