Influence of Ni doping on vanadium oxide/hexadecylamine multiwall nanotubes - Saleta, Martín E.; Curiale, Javier; Troiani, Horacio E.; Guevara, Sergio Ribeiro; Sánchez, Rodolfo D.; Malta, Marcos; Torresi, Roberto Manuel (Physica B - Condensed Matter, 2007)