1. Bohren, C.F., Huffman, D.R.: Absorption and Scattering of Light by Small Particles. Wiley, New York (1983)
2. Cai, W., Genov, D., Shalaev, V.: Superlens based on metal-dielectric composites. Phys. Rev. B 72, 1931011–1931014 (2005)
3. Cai, W., Shalaev, V.: Optical Metamaterials Fundamentals and Applications. Springer, Berlin (2010)
4. DaJian, W., ShuMin, J., Ying, C., XiaoJun, L.: Three-layered metallo-dielectric nanoshells: plausible meta-atoms for metamaterials with isotropic negative refractive index at visible wavelengths. Opt. Express 21(1), 1076–1086 (2013)
5. Diedrich, D., Heitmann, D., Mendach, S., Rottler, A.: Metal–dielectric metamaterials for transformation-optics and gradient-index devices in the visible regime. New J. Phys. 14(053042), 1–17 (2012)