Influence of Ammoniating Time on Nb-CATALYZED GaN Nanostructured Materials Zhuang, Huizhao ; Wang, Jie ; Zhang, Xiaokai ; Li, Junlin Abstract Publication: International Journal of Nanoscience Pub Date: 2011 DOI: 10.1142/S0219581X11008290 Bibcode: 2011IJN....10.1209Z