MISNER, Charles W.; THORNE, Kip S.; WHEELER, John Archibald. Gravitation. [s.l.]: W. H. Freeman, 1973. Dostupné online. ISBN0-7167-0344-0. Kapitola 33.5, s. 897-900.
Berman, Marcelo. “Energy of Black Holes and Hawking’s Universe” in Trends in Black Hole Research, page 148 (Kreitler ed., Nova Publishers 2006).
Burinskii, A. “Kerr Geometry Beyond the Quantum Theory” in Beyond the Quantum, page 321 (Theo Nieuwenhuizen ed., World Scientific 2007). The formula for the vector potential of Burinskii differs from that of Debney et al. merely by a gradient which does not affect the fields.
Stephani, Hans et al. Exact Solutions of Einstein's Field Equations (Cambridge University Press 2003). See page 485 regarding determinant of metric tensor. See page 325 regarding generalizations.
Appell, Math. Ann. xxx (1887) pp. 155–156. Discussed by Whittaker, Edmund and Watson, George. A Course of Modern Analysis, page 400 (Cambridge University Press 1927).
NEWMAN, Ezra; COUCH, E.; CHINNAPARED, K.; EXTON, A.; PRAKASH, A.; TORRENCE, R. Metric of a Rotating, Charged Mass. Journal of Mathematical Physics. 1965, s. 918–919. DOI10.1063/1.1704351. Bibcode1965JMP.....6..918N.Je zde použita šablona {{Cite journal}} označená jako k „pouze dočasnému použití“.
PUNSLY, Brian. High‐Energy Gamma‐Ray Emission from Galactic Kerr‐Newman Black Holes. I. The Central Engine. The Astrophysical Journal. 10 May 1998, s. 646. Dostupné online [cit. 16 May 2013]. DOI10.1086/305561. Bibcode1998ApJ...498..640P.Je zde použita šablona {{Cite journal}} označená jako k „pouze dočasnému použití“.
NEWMAN, Ezra; COUCH, E.; CHINNAPARED, K.; EXTON, A.; PRAKASH, A.; TORRENCE, R. Metric of a Rotating, Charged Mass. Journal of Mathematical Physics. 1965, s. 918–919. DOI10.1063/1.1704351. Bibcode1965JMP.....6..918N.Je zde použita šablona {{Cite journal}} označená jako k „pouze dočasnému použití“.
PUNSLY, Brian. High‐Energy Gamma‐Ray Emission from Galactic Kerr‐Newman Black Holes. I. The Central Engine. The Astrophysical Journal. 10 May 1998, s. 646. Dostupné online [cit. 16 May 2013]. DOI10.1086/305561. Bibcode1998ApJ...498..640P.Je zde použita šablona {{Cite journal}} označená jako k „pouze dočasnému použití“.
PUNSLY, Brian. High‐Energy Gamma‐Ray Emission from Galactic Kerr‐Newman Black Holes. I. The Central Engine. The Astrophysical Journal. 10 May 1998, s. 646. Dostupné online [cit. 16 May 2013]. DOI10.1086/305561. Bibcode1998ApJ...498..640P.Je zde použita šablona {{Cite journal}} označená jako k „pouze dočasnému použití“.