Authors: Astala, K Iwaniec, T Saksman, E

Citation: K. Astala et al., Beltrami operators in the plane, DUKE MATH J, 107(1), 2001, pp. 27-56

Authors: Astala, K Iwaniec, T Koskela, P Martin, G

Citation: K. Astala et al., Mappings of BMO-bounded distortion, MATH ANNAL, 317(4), 2000, pp. 703-726