Muñoz, Gerardo; Jones, Preston: The equivalence principle, uniformly accelerated reference frames, and the uniform gravitational field. In: American Journal of Physics. 78. Jahrgang, Nr.4, 2010, S.377–383, doi:10.1119/1.3272719, arxiv:1003.3022, bibcode:2010AmJPh..78..377M.
Hehl, F. W., Itin, Y., & Obukhov, Y. N.: On Kottler's path: Origin and evolution of the premetric program in gravity and in electrodynamics. In: International Journal of Modern Physics D. 25. Jahrgang, Nr.11, 2016, S.1640016, doi:10.1142/S0218271816400162, arxiv:1607.06159, bibcode:2016IJMPD..2540016H.
Muñoz, Gerardo; Jones, Preston: The equivalence principle, uniformly accelerated reference frames, and the uniform gravitational field. In: American Journal of Physics. 78. Jahrgang, Nr.4, 2010, S.377–383, doi:10.1119/1.3272719, arxiv:1003.3022, bibcode:2010AmJPh..78..377M.
Einstein, A.: Über Friedrich Kottlers Abhandlung "Über Einsteins Äquivalenzhypothese und die Gravitation". In: Annalen der Physik. 356. Jahrgang, Nr.22, 1916, S.639–642, doi:10.1002/andp.19163562206, bibcode:1916AnP...356..639E.
Hehl, F. W., Itin, Y., & Obukhov, Y. N.: On Kottler's path: Origin and evolution of the premetric program in gravity and in electrodynamics. In: International Journal of Modern Physics D. 25. Jahrgang, Nr.11, 2016, S.1640016, doi:10.1142/S0218271816400162, arxiv:1607.06159, bibcode:2016IJMPD..2540016H.
Muñoz, Gerardo; Jones, Preston: The equivalence principle, uniformly accelerated reference frames, and the uniform gravitational field. In: American Journal of Physics. 78. Jahrgang, Nr.4, 2010, S.377–383, doi:10.1119/1.3272719, arxiv:1003.3022, bibcode:2010AmJPh..78..377M.
Einstein, A.: Über Friedrich Kottlers Abhandlung "Über Einsteins Äquivalenzhypothese und die Gravitation". In: Annalen der Physik. 356. Jahrgang, Nr.22, 1916, S.639–642, doi:10.1002/andp.19163562206, bibcode:1916AnP...356..639E.
Hehl, F. W., Itin, Y., & Obukhov, Y. N.: On Kottler's path: Origin and evolution of the premetric program in gravity and in electrodynamics. In: International Journal of Modern Physics D. 25. Jahrgang, Nr.11, 2016, S.1640016, doi:10.1142/S0218271816400162, arxiv:1607.06159, bibcode:2016IJMPD..2540016H.