A Floquet-Bloch Decomposition of Maxwell's Equations Applied to Homogenization. - Daniel Sjöberg; Christian Engström; Gerhard Kristensson; David J. N. Wall; Niklas Wellander (Multiscale Model. Simul., 2005)

Inverse Bounds and Bulk Properties of Complex-Valued Two-Component Composites. - Christian Engström (SIAM J. Appl. Math., 2006)

Inverse Bounds of Two-Component Composites. - Christian Engström (SIAM J. Appl. Math., 2007)

On the Spectrum of an Operator Pencil with Applications to Wave Propagation in Periodic and Frequency Dependent Materials. - Christian Engström; Markus Richter (SIAM J. Appl. Math., 2009)

Spectral approximation of quadratic operator polynomials arising in photonic band structure calculations. - Christian Engström (Numerische Mathematik, 2014)

Efficient and reliable hp-FEM estimates for quadratic eigenvalue problems and photonic crystal applications. - Christian Engström; Stefano Giani; Luka Grubisic (Comput. Math. Appl., 2016)

On spurious solutions in finite element approximations of resonances in open systems. - Juan Carlos Araujo-Cabarcas; Christian Engström (Comput. Math. Appl., 2017)

Efficient resonance computations for Helmholtz problems based on a Dirichlet-to-Neumann map. - Juan Carlos Araujo-Cabarcas; Christian Engström; Elias Jarlebring (J. Comput. Appl. Math., 2018)

Removal of spurious solutions encountered in Helmholtz scattering resonance computations in R^d. - Juan Carlos Araujo-Cabarcas; Christian Engström (CoRR, 2019)

Computation of scattering resonances in absorptive and dispersive media with applications to metal-dielectric nano-structures. - Juan Carlos Araujo-Cabarcas; Carmen Campos; Christian Engström; José E. Román (J. Comput. Phys., 2020)

On spurious solutions encountered in Helmholtz scattering resonance computations in Rd with applications to nano-photonics and acoustics. - Juan Carlos Araujo-Cabarcas; Christian Engström (J. Comput. Phys., 2021)

A spectral projection based method for the numerical solution of wave equations with memory. - Christian Engström; Stefano Giani; Luka Grubisic (Appl. Math. Lett., 2022)

Higher Order Composite DG approximations of Gross-Pitaevskii ground state: Benchmark results and experiments. - Christian Engström; Stefano Giani; Luka Grubisic (J. Comput. Appl. Math., 2022)

khp-adaptive spectral projection based discontinuous Galerkin method for the numerical solution of wave equations with memory. - Stefano Giani; Christian Engström; Luka Grubisic (J. Comput. Appl. Math., 2023)

Shape optimization for the strong routing of light in periodic diffraction gratings. - Juan Carlos Araujo-Cabarcas; Christian Engström; Eddie Wadbro (J. Comput. Phys., 2023)

Numerical solution of distributed-order time-fractional diffusion-wave equations using Laplace transforms. - Christian Engström; Stefano Giani; Luka Grubisic (J. Comput. Appl. Math., 2023)

On spectral enclosures for Maxwell's equations with the Drude-Lorentz model. - Christian Engström (Appl. Math. Lett., 2024)