"Shuichi;Ikehata|","Purely Inseparable Ring Extensions and Azumaya Algebras","Mathematical Journal of Okayama University","0030-1566","1999-01","41","1","63","69","","","","https://ousar.lib.okayama-u.ac.jp/33619","" "Shuichi;Ikehata|","Note on Separable Crossed Products","Mathematical Journal of Okayama University","0030-1566","1999-01","41","1","71","74","","","","http://escholarship.lib.okayama-u.ac.jp/33627",""