@article{oai:nagoya.repo.nii.ac.jp:00028431,
 author = {Ueda, Yoshimichi},
 issue = {2},
 journal = {Journal of Functional Analysis},
 month = {Aug},
 note = {Reduced HNN extensions of von Neumann algebras (as well as C^*-algebras) will be introduced, and their modular theory, factoriality and ultraproducts will be discussed. In several concrete settings, detailed analysis on them will be also carried out.},
 pages = {383--426},
 title = {HNN extensions of von Neumann algebras},
 volume = {225},
 year = {2005}
}