Jana, Debnarayan First principles calculations of the optical properties of CxNy single walled nanotubes. [electronic resource] - Nanotechnology Apr 2009 - 175701 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 1361-6528 Standard No.: 10.1088/0957-4484/20/17/175701 doi