## Publications

Bifurcations of nontrivial solutions of a cubic Helmholtz system. Adv. Nonlinear Anal., 9(1):1026–1045, January 2020. URL https://doi.org/10.1515/anona-2020-0040. . [preprint]

Uncountably many solutions for nonlinear Helmholtz and curl-curl equations. Adv. Nonlinear Stud., 19(3):569–593, August 2019. URL https://doi.org/10.1515/ans-2019-2050. . [preprint]

On a fourth-order nonlinear Helmholtz equation. J. Lond. Math. Soc. (2), 99(3):831–852, June 2019. URL https://doi.org/10.1112/jlms.12196. . [preprint]

The limiting absorption principle for periodic differential operators and applications to nonlinear Helmholtz equations. Comm. Math. Phys., 368(2):799–842, June 2019. URL https://doi.org/10.1007/s00220-019-03363-1. . [preprint]

Dual variational methods for a nonlinear Helmholtz system. NoDEA Nonlinear Differential Equations Appl., 25(2):Art. 13, 26, March 2018. URL https://doi.org/10.1007/s00030-018-0504-z. . [preprint]

Oscillating solutions for nonlinear Helmholtz equations. Z. Angew. Math. Phys., 68(6):Art. 121, 19, October 2017. URL https://doi.org/10.1007/s00033-017-0859-8. . [preprint]

## Preprints

An annulus multiplier and applications to the limiting absorption principle for Helmholtz equations with a step potential. CRC 1173 Preprint 2020/7, Karlsruhe Institute of Technology, March 2020. .

Breather solutions of the cubic Klein–Gordon equation. CRC 1173 Preprint 2020/1, Karlsruhe Institute of Technology, January 2020. .

Dispersive estimates, blow-up and failure of Strichartz estimates for the Schrödinger equation with slowly decaying initial data. CRC 1173 Preprint 2019/17, Karlsruhe Institute of Technology, October 2019. .

On Helmholtz equations and counterexamples to Strichartz estimates in hyperbolic space. CRC 1173 Preprint 2019/5, Karlsruhe Institute of Technology, February 2019. .

## Theses

Nonlinear Helmholtz equations and systems. Habilitation thesis, Karlsruhe Institute of Technology (KIT), December 2019. .

*On a nonlinear Helmholtz system*. PhD thesis, Karlsruhe Institute of Technology (KIT), October 2019. .