@article{goto_higashimoto_takahashi_1974, 
  title={Equilibrium Qxygen Pressure over Polycrystalline SrFe 18O 27 Phase and It's Nonstoichiometry}, 
  volume={21}, 
  DOI={10.2497/jjspm.21.21}, 
  publisher={Japan Society of Powder and Powder Metallurgy}, 
  author={Goto and Higashimoto and Takahashi}, 
  year={1974}
  }