@article{CTT100632788, author = {Masaki Akaogi and M. Oohata and HITOSHI KAWAJI and Hiroshi Kojitani}, title = {Thermodynamic properties of stishovite by low-temperature heat capacity measurements and the coesite-stishovite transition boundary}, journal = {AMERICAN MINERALOGIST}, year = 2011, } @article{CTT100617476, author = {Kengo Oka and Masaki Azuma and Alexei A. Belik and Hiroshi Kojitani and Masaki Akaogi and Mikio Takano and Yuichi Shimakawa}, title = {Pressure-Induced Transformation of 6H Hexagonal to 3C Perovskite Structure in PbMnO3}, journal = {Inorganic Chemistry}, year = 2009, }