@article{elwi_al-rizzo_2011, 
  title={FRESNEL LENSES BASED ON NANO SHELL-SILVER COATED SILICA ARRAY FOR SOLAR CELLS APPLICATIONS}, 
  volume={32}, 
  DOI={10.2528/pierb11061309}, 
  publisher={EMW Publishing}, 
  author={Elwi and Al-Rizzo}, 
  year={2011}
  }