Keiichi Hayashi
![Keiichi Hayashi](https://upload.wikimedia.org/wikipedia/commons/5/54/Keiichi_Hayashi_cropped_William_Hague_and_Members_of_the_UK-Japan_21st_Century_Group_20130502.jpg)
1
Published: [2019]
Superior document: Title is part of eBook package: De Gruyter DGBA Mathematics - <1990
2
Published: [2019]
Superior document: Title is part of eBook package: De Gruyter DGBA Mathematics - <1990