@ARTICLE{
author={Danicic Aleksandar,Radovanovic Jelena V,Ramovic Sabina,Milanovic Vitomir B},
year={2016},
title={Exploring negative refraction conditions for quantum cascade semiconductor metamaterials in the terahertz spectral range},
journal={JOURNAL OF PHYSICS D-APPLIED PHYSICS},
volume={49},
number={8},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Radovanovic Jelena V,Ramovic Sabina,Danicic Aleksandar,Milanovic Vitomir B},
year={2012},
title={Negative refraction in semiconductor metamaterials based on quantum cascade laser design for the mid-IR and THz spectral range},
journal={APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING},
volume={109},
number={4},
pages={763-768},
document_type={Article},
} 

@ARTICLE{
author={Ramovic Sabina,Radovanovic Jelena V,Milanovic Vitomir B},
year={2012},
title={Mid-infrared semiconductor metamaterials utilizing intersubband transitions in quantum cascade laser structure},
journal={PHYSICA SCRIPTA},
volume={T149},
number={},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Ramovic Sabina,Radovanovic Jelena V,Milanovic Vitomir B},
year={2011},
title={Tunable semiconductor metamaterials based on quantum cascade laser layout assisted by strong magnetic field},
journal={JOURNAL OF APPLIED PHYSICS},
volume={110},
number={12},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Milanovic Vitomir B,Radovanovic Jelena V,Ramovic Sabina},
year={2009},
title={Influence of nonparabolicity on boundary conditions in semiconductor quantum wells},
journal={PHYSICS LETTERS A},
volume={373},
number={34},
pages={3071-3074},
document_type={Article},
}