1. On three Krein extension problems and some generalizations

   • Damir Z. Arov
   • Harry Dym

   OriginalPaper Pages: 1 - 91

2. On a class of canonical systems on half-axis

   • L. A. Sakhnovich

   OriginalPaper Pages: 92 - 112

3. C ^*-algebras generated by orthogonal projections and their applications

   • N. L. Vasilevski

   OriginalPaper Pages: 113 - 132