1. Fractional Integration and Integral Representations in Weighted Classes of Harmonic Functions

   • K. L. Avetisian

   OriginalPaper Pages: 161 - 174

2. φ-Factors for Function Seminorms

   • Héctor H. Cuenya

   OriginalPaper Pages: 175 - 186

3. Spherical Convergence of Double Fourier Integrals of Functions in Waterman Classes

   • M. I. Dyachenko

   Erratum Pages: 187 - 208

4. On the Uniform Summability of Multiple Walsh-Fourier Series

   • U. Goginava

   OriginalPaper Pages: 209 - 226

5. On the Equivalence of Classes of Numerical Sequences

   • L. Leindler

   OriginalPaper Pages: 227 - 234

6. Necessary Conditions for the Convergence of Fourier Series

   • Daniel Waterman

   OriginalPaper Pages: 235 - 239

7. Necessary Conditions for the Convergence of Lebesgue-Fourier Series

   • Prem Chandra

   Erratum Pages: 241 - 241