1. Complexity of Ehrenfeucht models

   • A. N. Gavryushkin

   OriginalPaper Pages: 289 - 295

2. Conjugately dense subgroups of free products of groups with amalgamation

   • S. A. Zyubin

   OriginalPaper Pages: 296 - 305

3. Index sets of computable structures

   • W. Calvert
   • V. S. Harizanov
   • S. Miller

   OriginalPaper Pages: 306 - 325

4. Finite groups with an almost regular automorphism of order four

   • N. Yu. Makarenko
   • E. I. Khukhro

   OriginalPaper Pages: 326 - 343

5. Slender partial quadrangles and their automorphisms

   • A. A. Makhnev
   • M. S. Nirova

   OriginalPaper Pages: 344 - 352

6. The property of being algebraic for the lattice of all τ-closed totally saturated formations

   • V. G. Safonov

   OriginalPaper Pages: 353 - 356

7. Sessions of the seminar “Algebra i Logika”

   Announcement Pages: 357 - 359