One-Step Preparation of N-Doped Nanowhisker TiO2 by Micro Arc Oxidation - Su, Yu-Cheng (玉成 苏); Zhang, Gu-Ling (谷令广 张); Wang, Wen-Zhong (文忠 王); Zou, Bin (斌部); Ao, Le (乐敖) (Chinese physics letters, 2011)