Extinction theorem and propagation of electromagnetic waves between two anisotropic materials W. X. Shu, Z. Ren, H. L. Luo and F. Li Eur. Phys. J. D, 41 3 (2007) 541-546 Published online: 08 December 2006 DOI: 10.1140/epjd/e2006-00257-1