Editing Pp-wave spacetime (section)

==References==
* {{cite web | title=On Generalised P.P. Waves| work=J. D. Steele | url=http://web.maths.unsw.edu.au/~jds/Papers/gppwaves.pdf | access-date=June 12, 2005}}
* {{cite book | author = Hall, Graham | title=Symmetries and Curvature Structure in General Relativity (World Scientific Lecture Notes in Physics) | location= Singapore | publisher=World Scientific Pub. Co | year=2004 | isbn=981-02-1051-5}}
* {{cite book |author1=Stephani, Hans |author2=Kramer, Dietrich |author3=MacCallum, Malcolm |author4=Hoenselaers, Cornelius |author5=Herlt, Eduard  |name-list-style=amp | title=Exact Solutions of Einstein's Field Equations | location=Cambridge | publisher=[[Cambridge University Press]] | year=2003 | isbn=0-521-46136-7}}  ''See Section 24.5''
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* Yi-Fei Chen and J.X. Lu (2004), "[https://arxiv.org/abs/hep-th/0406045v1 Generating a dynamical M2 brane from super-gravitons in a pp-wave background]"
* Bum-Hoon Lee (2005), "[http://www.iop.org/EJ/article/1742-6596/24/1/015/jpconf5_24_015.pdf?request-id=55e31a6f-7908-438e-b88e-a061ef1785e2 D-branes in the pp-wave background]"
* H.-J. Schmidt (1998). "A two-dimensional representation of four-dimensional gravitational waves," ''Int. J. Mod. Phys.'' '''D7''' (1998) 215–224 (arXiv:gr-qc/9712034).
* [[Albert Einstein]], "On Gravitational Waves," ''J. Franklin Inst.'' '''223''' (1937).
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* {{cite journal |author1=Cianci, R. |author2=Fabbri, L. |author3=Vignolo S. | title=Exact solutions for Weyl fermions with gravity | journal=Eur. Phys. J. C| year=2015 | volume=75 |issue=10 | pages=478 | doi=10.1140/epjc/s10052-015-3698-9|arxiv = 1507.06439 |bibcode = 2015EPJC...75..478C |s2cid=119618017 }}