@article{oai:tsukuba.repo.nii.ac.jp:00017313,
 author = {Ikai, Hisatoshi},
 issue = {2},
 journal = {Tsukuba Journal of Mathematics},
 month = {Oct},
 pages = {293--320},
 title = {Azumaya algebras with general gradings and their automorphisms},
 volume = {23},
 year = {1999}
}