| 2005 |
Q-functions of Hermitian contractions of Krein-Ovcharenko type |
Arlinskii Yury;Hassi Seppo;de Snoo Henk |
| 2005 |
Similarity between $J$-self-adjoint Sturm-Liouville operators with an operator potential and self-adjoint operators |
Hassi Seppo and Karabash Ilia |
| 2004 |
Boundary relations and their Weyl families |
Derkach;Vladimir;Seppo Hassi;Mark Malamud;and Henk de Snoo |
| 2004 |
On Krein's extension theory of nonnegative operators. |
Hassi;Seppo;Mark Malamud;and Henk de Snoo |
| 2004 |
Boundary relations and the Weyl families. |
Derkach;Vladimir;Seppo Hassi;Mark Malamud;and Henk de Snoo |
