TY - BOOK AU - Alexits,G. AU - Foldes,I. TI - Convergence problems of orthogonal series U1 - 517.35 PY - 1961/// CY - Oxford PB - Pergamon Press KW - Convergence KW - Series, Orthogonal KW - Harmonic functions N1 - Includes index; Bibliography: p. 339-347 ER -