Journal of Algebra
Journal of Algebra > 1999 > 212 > 2 > 495-514
Journal of Algebra > 1999 > 212 > 2 > 721-737
Journal of Algebra > 1999 > 212 > 2 > 419-427
Journal of Algebra > 1999 > 212 > 2 > 428-459
Journal of Algebra > 1999 > 212 > 2 > 669-682
Journal of Algebra > 1999 > 212 > 2 > 460-465
Journal of Algebra > 1999 > 212 > 2 > 482-494
Journal of Algebra > 1999 > 212 > 2 > 557-590
Journal of Algebra > 1999 > 212 > 2 > 753-768
Journal of Algebra > 1999 > 212 > 2 > 395-418