Newman, Ezra; Janis, Allen (1965). "Note on the Kerr Spinning-Particle Metric". Journal of Mathematical Physics. 6 (6): 915–917. Bibcode:1965JMP.....6..915N. doi:10.1063/1.1704350.
Newman, Ezra; Couch, E.; Chinnapared, K.; Exton, A.; Prakash, A.; Torrence, R. (1965). "Metric of a Rotating, Charged Mass". Journal of Mathematical Physics. 6 (6): 918–919. Bibcode:1965JMP.....6..918N. doi:10.1063/1.1704351.
Debney, G.C.; Kerr, R. P. & Schild, A. (1969). "Solutions of the Einstein and Einstein-Maxwell Equations". J. Math. Phys.10 (10): 1842. Bibcode:1969JMP....10.1842D. doi:10.1063/1.1664769
Debney, G.C.; Kerr, R. P. & Schild, A. (1969). "Solutions of the Einstein and Einstein-Maxwell Equations". J. Math. Phys.10 (10): 1842. Bibcode:1969JMP....10.1842D. doi:10.1063/1.1664769
Newman, Ezra; Janis, Allen (1965). "Note on the Kerr Spinning-Particle Metric". Journal of Mathematical Physics. 6 (6): 915–917. Bibcode:1965JMP.....6..915N. doi:10.1063/1.1704350.
Newman, Ezra; Couch, E.; Chinnapared, K.; Exton, A.; Prakash, A.; Torrence, R. (1965). "Metric of a Rotating, Charged Mass". Journal of Mathematical Physics. 6 (6): 918–919. Bibcode:1965JMP.....6..918N. doi:10.1063/1.1704351.