@article{CTT100723477,
  author = {Fumio Akagi and Shoui Suzuki and Yutaka Ishida and Tsubasa Hatanaka and Tsukasa  Matsuo and hiroyuki kawaguchi},
  title = {Reactions of a Niobium Nitride Complex Prepared from Dinitrogen: Synthesis of Imide and Ureate Complexes and Ammonia Formation},
  journal = {Eur. J. Inorg. Chem.},
  year = 2013,
}

@article{CTT100778600,
  author = {Fumio Akagi and Yutaka Ishida and Tsukasa Matsuo and Hiroyuki Kawaguchi},
  title = {Synthesis and Reactivity of Niobium Complexes Having a Tripodal Triaryloxide Ligand in Bidentate, Tridentate, and Tetradentate Coordination Modes},
  journal = {Dalton Transactions},
  year = 2011,
}