The original articles are Ehlers, J. (1957), "Konstruktionen und Charakterisierung von Lösungen der Einsteinschen Gravitationsfeldgleichungen", Dissertation, Hamburg University and Geroch, R. (1971), "A method for generating new solutions of Einstein's field equation. I", J. Math. Phys., 12 (6): 918–924, Bibcode:1971JMP....12..918G, doi:10.1063/1.1665681; for the applications, Mars, Marc (2001), "Space-time Ehlers group: Transformation law for the Weyl tensor", Class. Quantum Grav., 18 (4): 719–738, arXiv:gr-qc/0101020v1, Bibcode:2001CQGra..18..719M, doi:10.1088/0264-9381/18/4/311, S2CID16943248.
doi.org
The original articles are Ehlers, J. (1957), "Konstruktionen und Charakterisierung von Lösungen der Einsteinschen Gravitationsfeldgleichungen", Dissertation, Hamburg University and Geroch, R. (1971), "A method for generating new solutions of Einstein's field equation. I", J. Math. Phys., 12 (6): 918–924, Bibcode:1971JMP....12..918G, doi:10.1063/1.1665681; for the applications, Mars, Marc (2001), "Space-time Ehlers group: Transformation law for the Weyl tensor", Class. Quantum Grav., 18 (4): 719–738, arXiv:gr-qc/0101020v1, Bibcode:2001CQGra..18..719M, doi:10.1088/0264-9381/18/4/311, S2CID16943248.
harvard.edu
ui.adsabs.harvard.edu
The original articles are Ehlers, J. (1957), "Konstruktionen und Charakterisierung von Lösungen der Einsteinschen Gravitationsfeldgleichungen", Dissertation, Hamburg University and Geroch, R. (1971), "A method for generating new solutions of Einstein's field equation. I", J. Math. Phys., 12 (6): 918–924, Bibcode:1971JMP....12..918G, doi:10.1063/1.1665681; for the applications, Mars, Marc (2001), "Space-time Ehlers group: Transformation law for the Weyl tensor", Class. Quantum Grav., 18 (4): 719–738, arXiv:gr-qc/0101020v1, Bibcode:2001CQGra..18..719M, doi:10.1088/0264-9381/18/4/311, S2CID16943248.
semanticscholar.org
api.semanticscholar.org
The original articles are Ehlers, J. (1957), "Konstruktionen und Charakterisierung von Lösungen der Einsteinschen Gravitationsfeldgleichungen", Dissertation, Hamburg University and Geroch, R. (1971), "A method for generating new solutions of Einstein's field equation. I", J. Math. Phys., 12 (6): 918–924, Bibcode:1971JMP....12..918G, doi:10.1063/1.1665681; for the applications, Mars, Marc (2001), "Space-time Ehlers group: Transformation law for the Weyl tensor", Class. Quantum Grav., 18 (4): 719–738, arXiv:gr-qc/0101020v1, Bibcode:2001CQGra..18..719M, doi:10.1088/0264-9381/18/4/311, S2CID16943248.