%0 Journal Article %J Physical Review B: Condensed Matter and Materials Physics %D 2010 %T Optical Transitions in Semiconducting Zigzag Carbon Nanotubes with Small Diameters: A First-Principles Broad-Range Study %A Motavas, S %A Ivanov, A %A Nojeh, A %P 10 %V 82 %8 08/2010