@article{CTT100672588, author = {Yasuhiro Sakai and Takehiko Yamato}, title = {On the Exchange of Cost Information in a Bertrand-type Duopoly Model,}, journal = {Economic Studies Quarterly}, year = 1990, } @inproceedings{CTT100696365, author = {Yoshisato Kimura and Toshiyasu Tanoguchi and Yasuhiro Sakai and Yaw-Wang Chai and Yoshinao Mishima}, title = {Effect of Vacancy-Site Occupation in Half-Heusler Compound ZrNiSn on Phase Stability and Thermoelectric Properties}, booktitle = {MRS Symp. Proc., Advanced Intermetallic-Based Alloys for Extreme Environment and Energy Applications}, year = 2011, }