Editing Bäcklund transform (section)

== References ==
{{Refbegin}}
* {{Cite book
| publisher = Math Sci Press
| isbn = 978-0-915692-16-3
| last = Hermann
| first = Robert
| author-link=Robert Hermann (mathematician)
| title = The geometry of non-linear differential equations, Bäcklund transformations, and solitons
| date = 1976
}}
* {{Citation
| edition = 1st
| publisher = Academic Press
| isbn = 0-12-592850-5
| last1 = Rogers
| first1 = C.
| first2 = W.F. | last2 = Shadwick
| title = Bäcklund transformations and their applications
| date = 1982-05-12
}}
* {{Citation
| publisher = [[Cambridge University Press]]
| isbn = 978-0-521-01288-1
| last1 = Rogers
| first1 = C.
| first2 = Wolfgang Karl | last2 = Schief
| title = Bäcklund and Darboux transformations
| date = 2002
}}, [https://www.loc.gov/catdir/samples/cam031/2001043453.pdf excerpt]
* A. D. Polyanin and V. F. Zaitsev, ''Handbook of Nonlinear Partial Differential Equations'', Chapman & Hall/CRC Press, 2004.
{{Refend}}