View source for Regularity of optimal transport maps and the Monge-Ampére equation

==References==
<references>
<ref name="Santambrogio">[https://link.springer.com/book/10.1007/978-3-319-20828-2 F. Santambrogio, ''Optimal Transport for Applied Mathematicians'', p. 54-57]</ref>
<ref name="Figalli-Glaudo">[https://www.ems-ph.org/books/book.php?proj_nr=267, Figalli-Glaudo, ''An Invitation to Optimal Transport'', p. 108-110]</ref>
<ref name="OTWiki">[[Optimal Transport and the Monge Ampère equation]]</ref>
<ref name="Figalli">[http://www.numdam.org/item/AST_2010__332__341_0.pdf, A. Figallie, ''Regularity of Optimal Transport Maps'']</ref>
</references>