@article{oai:u-ryukyu.repo.nii.ac.jp:02010317,
 author = {Sudo, Takahiro},
 journal = {Ryukyu mathematical journal},
 month = {Dec},
 note = {We review and study noncommutative continuous deformation theory for soft C^∗-algebras such as the soft torus of Exel and other variations by several others. This theory includes structure theory, K-theory, and continuous field theory for those C^∗-algebras. In addition, their (finite dimensional) representation theory is reviewed and considered. Furthermore, noncommutative shape theory for C^∗-algebras is also done., 紀要論文},
 pages = {31--114},
 title = {Noncommutative continuous deformation theory by soft C^∗-algebras : a review},
 volume = {22},
 year = {2009}
}