The Logarithm of the Poisson Kernel of a C 1 Domain has Vanishing Mean Oscillation
David S Jerison, Carlos E. Kenig · Transactions of the American Mathematical Society · 1982
David S. Jerison, Carlos E. Kenig, The Logarithm of the Poisson Kernel of a C1 Domain has Vanishing Mean Oscillation, Transactions of the American Mathematical Society, Vol. 273, No. 2 (Oct., 1982), pp. 781-794