Christian Engström, Markus Richter. On the Spectrum of an Operator Pencil with Applications to Wave Propagation in Periodic and Frequency Dependent Materials. SIAM Journal of Applied Mathematics, 70(1):231-247, 2009. [doi]
@article{EngstromR09,
title = {On the Spectrum of an Operator Pencil with Applications to Wave Propagation in Periodic and Frequency Dependent Materials},
author = {Christian Engström and Markus Richter},
year = {2009},
doi = {10.1137/080728779},
url = {http://dx.doi.org/10.1137/080728779},
researchr = {https://researchr.org/publication/EngstromR09},
cites = {0},
citedby = {0},
journal = {SIAM Journal of Applied Mathematics},
volume = {70},
number = {1},
pages = {231-247},
}