BARRIENTOS, J., CISTERNA, A., HASSAINE, M., OLIVA, J. Revisiting Buchdahl transformations: new static and rotating black holes in vacuum, double copy, and hairy extensions. European Physical Journal C. 2024, 84(10), 1011. ISSN 1434-6044. E-ISSN 1434-6052. Available: https://doi.org/10.1140/epjc/s10052-024-13383-4.