Universitatea de Stat din Moldova

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Vladimir Andrunachievici Institute of Mathematics

and Computer Science

5 Academiei str., Chisinau, MD 2028, Moldova

Tiraspol State University

5 Gh. Iablocichin str., Chisinau, MD-2069, Moldova

E-mail: ,

and Computer Science

5 Academiei str., Chisinau, MD 2028, Moldova

Tiraspol State University

5 Gh. Iablocichin str., Chisinau, MD-2069, Moldova

E-mail: ,

- Limit cycles in continuous and discontinuous piecewise linear differential systems with two pieces separated by a straight line
**The problem of the center for cubic differential systems with the line at infinity and an affine real invariant straight line of total algebraic multiplicity five**- The topological classification of a family of quadratic differential systems in terms of affine invariant polynomials
- Levitan Almost Periodic Solutions of Infinite-dimensional Linear Differential Equations
- The classification of a family of cubic differential systems in terms of configurations of invariant lines of the type (3,3)
- On the upper bound of the number of functionally independent focal quantities of the Lyapunov differential system
- On limit cycles of polynomial systems of the first-order ODEs
- Sufficient GL(2,R)-invariant center conditions for some classes of two-dimensional cubic differential systems.
- Invariant conditions of stability of unperturbed motion governed by critical differential systems s(1,2,3)
- Working with professor Nicolae Vulpe