1. Pseudogroups of transformations of geometrical-differential structures and their invariants

   • L. E. Evtushik

   OriginalPaper Pages: 1643 - 1684

2. Equations of the inverse problem, backlund transformations, and the theory of connections

   • A. K. Rybnikov

   OriginalPaper Pages: 1685 - 1699

3. On characteristic directions of point correspondences between spaces: Algebraic aspect (ω-Systems)

   • Yu. V. Pavlyuchenko

   OriginalPaper Pages: 1700 - 1747

4. Theory of congruences and systems of conservation laws

   • S. I. Agafonov
   • E. V. Ferapontov

   OriginalPaper Pages: 1748 - 1794