1. "On the Inverse Dirichlet Problem",
talk at the conference "Analytic and Geometric Methods in Inverse Problems"
25-30 August,2003, Helsinki, Finland.
2. "Workshop on Inverse Spectral Problems",
1-5 September, 2003, Helsinki, Finland.
3. "On the Inverse Dirichlet Problem" seminar,
12.12.2003, ÝYTE, Urla, Turkey.
4. "Asymptotic Formulas for Eigenvalues of Multidimensional Schrödinger Operator",
talk at "7th International Conference on Harmonic Analysis and Partial Differential Equations"
21-25 June,2004, El Escorial, Madrid, Spain.
5. "Fourth European Congress of Mathematics",
27 June -July 02, 2004, Stockholm, Sweden.
6. "Perturbation of the Eigenvalues of the Schrödinger Operator."
Seminer, 07.06.2006, ÝYTE