Bibliography

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Haim Brezis. Functional analysis, Sobolev spaces and partial differential equations. Volume 2. Springer, 2011. doi:https://doi.org/10.1007/978-0-387-70914-7.

Bro12

Andrew Browder. Mathematical analysis: an introduction. Springer Science & Business Media, 2012. doi:https://doi.org/10.1007/978-1-4612-0715-3.

Eva10

L. C. Evans. Partial Differential Equations. Volume 19 of Graduate Studies in Mathematics. American Math Society, 2010.