COMMUNICATIONS IN ALGEBRA, vol. 31, no. 12, page. 5755 - 5768, 2003-01
COMMUNICATIONS IN ALGEBRA, vol. 34, no. 9, page. 3153 - 3165, 2006-01
COMMUNICATIONS IN ALGEBRA, vol. 26, no. 10, page. 3223 - 3238, 1998-01
COMMUNICATIONS IN ALGEBRA, vol. 30, no. 12, page. 5955 - 5960, 2002-01
COMMUNICATIONS IN ALGEBRA, vol. 43, no. 2, page. 440 - 446, 2015-02
COMMUNICATIONS IN ALGEBRA, vol. 28, no. 5, page. 2533 - 2542, 2000-01
COMMUNICATIONS IN ALGEBRA, vol. 49, no. 1, page. 207 - 215, 2020-08
COMMUNICATIONS IN ALGEBRA, vol. 39, no. 11, page. 4246 - 4258, 2011-01
COMMUNICATIONS IN ALGEBRA, vol. 17, no. 3, page. 553 - 564, 1989-01
COMMUNICATIONS IN ALGEBRA, vol. 46, no. 3, page. 1231 - 1236, 2018-03