1. On the boundedness of singular integral operators from certain classes. II

   • Sergey Ajiev

   OriginalPaper Pages: 81 - 112

2. New phenomena in coconvex approximation

   • G. A. Dzyubenko
   • J. Gilewicz
   • I. A. Shevchuk

   OriginalPaper Pages: 113 - 121

3. O predstavlenii lineinykh operatorov, perestanovochnykh s operatorom umnozheniya

   • Yu. F. Korobeinik

   OriginalPaper Pages: 123 - 153

4. A note on the best approximation of sine and cosine series

   • László Leindler

   OriginalPaper Pages: 155 - 161