JournalsrmiVol. 5, No. 1Volume 5, No. 1 (1989) Revista Matemática Iberoamericanapp. 1–19Regularity of ppp-Harmonic Functions on the PlaneTadeusz IwaniecJuan J. Manfredipp. 21–36A Microlocal F. and M. Riesz Theorem with ApplicationsR. G. M. Brummelhuispp. 37–46An Extremal Property of Entire Functions with Positive ZerosDaniel F. SheaAllen Weitsman