TY - JOUR T1 - Transmission, refraction, and focusing properties of labyrinth based left-handed metamaterials A1 - Ozbay, E. A1 - Bulu, I. A1 - Caglayan, H. JA - Physica Status Solidi B Y1 - 2007 VL - 244 SP - 1202 EP - 1210 ER -