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\bibitem{Colomer_etal2002} {\textquotedblleft}\textit{Electron diffraction of nanotubes bundles : unique helicity and tube-tube atomically coherent packing}{\textquotedblright}. Colomer J-F, Henrard L, Lambin P, Van Tendeloo G, AIP conference proceedings
T2 -- 16th International Winterschool on Electronic Properties of Novel, Materials, MAR 02-09, 2002, KIRCHBERG, AUSTRIA , 314 (2002).   http://doi.org/10.1063/1.1514131

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