21.   | 
   
      
      
           | 
         Pozhidaev A. P. 
            Dialgebras and related triple systems 
            
          | 
       
       
    | 
   
   
   22.   | 
   
      
      
           | 
         Prokip V. M. 
            About similary of matrices over a principal ideal domain 
            
          | 
       
       
    | 
   
   
   23.   | 
   
      
      
           | 
         Radchenko O. V. 
            Conjugate-commutative width an involution of finite simple groups 
            
          | 
       
       
    | 
   
   
   24.   | 
   
      
      
           | 
         Russo F. 
            Generalized PC-groups and generalized CC-groups of matrices 
            
          | 
       
       
    | 
   
   
   25.   | 
   
      
      
           | 
         Russo F. 
            Conjugately dense subgroups and covering of groups 
            
          | 
       
       
    | 
   
   
   26.   | 
   
      
      
           | 
         Rybakov V. V. 
            Decision Algorithms for Linear Temporal Logic with Current Tine Point Clusters 
            
          | 
       
       
    | 
   
   
   27.   | 
   
      
      
           | 
         Shchigolev V. 
            Rectangular low level case of modular branching problem for GLn(K) 
            
          | 
       
       
    | 
   
   
   28.   | 
   
      
      
           | 
         Starikova Î. À. 
            The classification of symmetric matrices over fields with four square classes 
            
          | 
       
       
    | 
   
   
   29.   | 
   
      
      
           | 
         Sudoplatov S. V. 
            On prerank functions generating stable syntactic generic models 
            
          | 
       
       
    | 
   
   
   30.   | 
   
      
      
           | 
         Tertychna O. M. 
            On finite-dimensional representations of semigroups genetated by idempotents with partial null multiplication 
            
          | 
       
       
    |