| Publication | Date of Publication | Type |
|---|
| https://portal.mardi4nfdi.de/entity/Q6078055 | 2023-09-27 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5053758 | 2022-12-06 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5065763 | 2022-03-22 | Paper |
| A New Representation of Left and Right Generalized Drazin Invertible Operators | 2021-12-21 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5164605 | 2021-11-12 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5161466 | 2021-10-29 | Paper |
| Drazin inverse: representation, approximation, continuity and illustrations | 2021-10-29 | Paper |
| Left and right generalized Drazin inverses for closed operators and application to singular linear equations | 2021-09-10 | Paper |
| Quasi-compactness of linear operators on Banach spaces: New properties and application to Markov chains | 2021-04-23 | Paper |
| A general version of Neubauer’s lemma and closed range almost closed operators | 2021-04-23 | Paper |
| Left and right generalized Drazin invertible operators and local spectral theory | 2020-12-29 | Paper |
| Further results on left and right generalized Drazin invertible operators | 2020-12-16 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5132978 | 2020-11-12 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5133367 | 2020-11-12 | Paper |
| New interpretation of elliptic Boundary value problems via invariant embedding approach and Yosida regularization | 2020-07-08 | Paper |
| Stability of essential spectra of closed operators under T-compact equivalence and applications | 2019-12-05 | Paper |
| A spectral method for fourth-order boundary value problems | 2019-09-04 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5227847 | 2019-08-07 | Paper |
| The perturbation classes problem for generalized Drazin invertible operators. II | 2019-07-18 | Paper |
| Quotient of linear relations and applications | 2019-06-27 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5379926 | 2019-06-14 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5381101 | 2019-06-07 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4627899 | 2019-03-05 | Paper |
| Quasi-nilpotent perturbations of the generalized Kato spectrum | 2018-10-10 | Paper |
| Complex symmetric operators and semiclassical resonances | 2018-06-08 | Paper |
| The perturbation classes problem for generalized Drazin invertible operators. I | 2018-04-16 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4605999 | 2018-02-28 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4602606 | 2018-01-31 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4598663 | 2017-12-15 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4598684 | 2017-12-15 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4598697 | 2017-12-15 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5360975 | 2017-09-26 | Paper |
| Linear boundary-value problems described by Drazin invertible operators | 2017-09-04 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2981148 | 2017-05-08 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2951778 | 2017-01-09 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2953241 | 2017-01-04 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2953110 | 2017-01-03 | Paper |
| Retraction notice to: ``Spectral mapping theorem for generalized Kato spectrum | 2015-09-25 | Paper |
| Left and right generalized Drazin invertible operators | 2015-03-23 | Paper |
| On the spectral boundary value problems and boundary approximate controllability of linear systems | 2015-02-06 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2927564 | 2014-11-03 | Paper |
| Retracted: Spectral mapping theorem for generalized Kato spectrum | 2014-10-31 | Paper |
| On different concepts of closedness of linear operators | 2014-05-14 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2869010 | 2013-12-30 | Paper |
| Asymptotic analysis for Schrödinger Hamiltonians via Birkhoff–Gustavson normal form | 2013-11-26 | Paper |
| Semi-Fredholm operators and pure contractions in Hilbert space | 2013-09-24 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4647727 | 2012-11-07 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3009649 | 2011-06-24 | Paper |
| Quantum Birkhoff-Gustavson normal form in some completely resonant cases | 2011-03-14 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3073808 | 2011-02-11 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3164326 | 2010-10-27 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3577592 | 2010-07-22 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5323828 | 2009-07-31 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5320827 | 2009-07-22 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3512004 | 2008-07-11 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3508890 | 2008-07-01 | Paper |
| On different products of closed operators | 2008-05-07 | Paper |
| A topological characterization of the product of two closed operators | 2008-02-21 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5296551 | 2007-08-01 | Paper |
| Resonances of a two-state semiclassical Schrödinger Hamiltonians | 2007-06-27 | Paper |
| Resonances of polyatomic molecules in the Born-Oppenheimer approximation | 2007-05-16 | Paper |
| Parametrix of the hyperbolic \(C^\infty\) Cauchy problem with a Leray-Volevich order system | 2006-06-06 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3378402 | 2006-03-30 | Paper |
| Resonances of diatomic molecules in the born-oppenheimer approximation | 1995-12-04 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4321653 | 1995-01-30 | Paper |
