By Hentzel I. R.   in Communications in Algebra

ISSN:0092-7872|35|2|589-595

Taylor & Francis Ltd‎(2007)‎

Access to resources Favorite 4.3093123

By Hentzel I.R.   Peresi L.A.   in Journal of Algebra

ISSN:0021-8693|188|1|292-309

Academic Press‎(1997)‎

Access to resources Favorite 3.7706482