@article { Motavas2010a, title = {Optical Transitions in Semiconducting Zigzag Carbon Nanotubes with Small Diameters: A First-Principles Broad-Range Study}, journal = {Physical Review B: Condensed Matter and Materials Physics}, volume = {82}, year = {2010}, month = {08/2010}, pages = {10 }, chapter = {085442-1 }, author = {S. Motavas and A. Ivanov and A. Nojeh} }