| 2019 |
Holomorphic operator-valued functions generated by passive selfadjoint systems |
Arlinskiĭ, Yuri; Hassi, Seppo |
| 2018 |
Lebesgue type decompositions for linear relations and Ando's uniqueness criterion |
Hassi, Seppo; Sebestyén, Zoltán; de Snoo, Henk |
| 2018 |
Limit Properties of Eigenvalues in Spectral Gaps |
Hassi, Seppo; de Snoo, Henk; Winkler, Henrik |
| 2017 |
Limit-point/limit-circle classification for Hain-Lüst type equations |
Hassi, Seppo; Möller, Manfred; de Snoo, Henk |
| 2017 |
Extremal maximal sectorial extensions of sectorial relations |
Hassi, Seppo; A. Sandovici; H.S.V. de Snoo; H. Winkler |
