Characterization of negative refraction

Hi there
how can I find the following paper:

Characterization of negative refraction with multilayered mushroom-type
metamaterials at microwaves

Chandra S. R. Kaipa, Alexander B. Yakovlev, and Mário G. Silveirinha

http://link.aip.org/link/doi/10.1063/1.3549129

can anyone help?

thanks

hello hisa
if i can help you ?
i have this paper
"contribution to Characterization techniques for practical metamaterials and microwave application"
may be help you if you need it i will post it.
also i'm interesting in metamaterilas realization
TAHNKS