JournalsrmiVol. 4, No. 3Volume 4, No. 3 (1988) Revista Matemática Iberoamericanapp. 355–405Estimates of Kernels on Three-Dimensional CR ManifoldsCharles FeffermanJoseph J. Kohnpp. 407–451Infinite Group Actions on SpheresGaven J. Martinpp. 453–468Comparison Principles and Pointwise Estimates for Viscosity Solutions of Nonlinear Elliptic EquationsNeil S. Trudingerpp. 469–486Calderón's Problem for Lipschitz Classes and the Dimension of QuasicirclesKari Astala
pp. 453–468Comparison Principles and Pointwise Estimates for Viscosity Solutions of Nonlinear Elliptic EquationsNeil S. Trudinger