Elliptic partial differential equations and quasiconformal mappings in the plane /
Astala, Kari,1953-
Iwaniec, Tadeusz.
Martin, Gaven.
Princeton, N.J. ; Oxford : Princeton University Press,
c2009.
Includes bibliographical references (p. 647-670) and index.
Differential equations, Elliptic.
Quasiconformal mappings.