TY - JOUR AU - A. I. Kashu TI - Closure operators in the categories of modules. Part~IV (Relations between the operators and preradicals) JO - Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica PY - 2014 SP - 13 EP - 22 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/BASM_2014_3_a1/ LA - en ID - BASM_2014_3_a1 ER -