| 2010 |
Truncated moment problem in the class of generalized Nevanlinna functions |
V.A. Derkach; S. Hassi ; H.S.V. de Snoo |
| 2010 |
On J-self-adjoint operators with stable C-symmetry |
S. Hassi ; S. Kuzhel |
| 2010 |
Sesquilinear forms corresponding to a non-semibounded Sturm-Liouville operator |
Fleige, A.; Hassi, S.; de Snoo,H.S.V. ; Winkler, H. |
| 2010 |
Monotone convergence theorems for semi-bounded operators and forms with applications |
Behrndt, J. ; Hassi, S.; De Snoo, H.S.V., Wietsma, H.L. |
| 2009 |
The realization problem for Herglotz-Nevanlinna functions |
Hassi, S; de Snoo, H; Tsekanovskii, E |
