1.
Elliptic Partial Differential Equations & Quasiconformal Mappings in the Plane
by Astala, Kari, Iwaniec, Tade...
ISBN: 9780691137773
2.
Elliptic Partial Differential Equations and Quasiconformal Mappings in the Plane (pms-48)
by Astala, Kari, Iwaniec, Tade...
ISBN: 9781400830114