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- Optimal control for one complex dynamic system.
**Conjugate-orthogonality and the complete multiplication group of a quasigroup.**- The graded Jacobson radical of associative rings.
- Applications of the integral operator to the class of meromorphic functions.
- Global Attractors of Non-autonomous Difference Equations.
- On free topological groups.
- On Topological Groupoids and Multiple Identities.
- The distribution of a planar random evolution with random start point.
- About the solvability of systems of integral equations with different degrees of differences in kernels.
- Nash equilibria in the noncooperative informational extended games.
- Professor Nicolae Vulpe 60th anniversary.