%0 Journal Article %T Electron Spectrum and Tunneling Current of the Toroidal and Helical Graphene Nanoribbon-Quantum Dots Contact %A Mikhail B. Belonenko %A Nikolay G. Lebedev %A Alexander V. Zhukov %A Natalia N. Yanyushkina %J ISRN Nanotechnology %D 2011 %I Hindawi Publishing Corporation %R 10.5402/2011/161849 %U http://dx.doi.org/10.5402/2011/161849