TY - JOUR AU - Cohn, Richard M. TI - Systems of Ideals JO - Canadian journal of mathematics PY - 1969 SP - 783 EP - 807 VL - 21 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1969-089-0/ DO - 10.4153/CJM-1969-089-0 ID - 10_4153_CJM_1969_089_0 ER -