TY - JOUR AU - D. F. Goguadze TI - About the Notion of Semiring of Sets JO - Matematičeskie zametki PY - 2003 SP - 362 EP - 368 VL - 74 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_2003_74_3_a4/ LA - ru ID - MZM_2003_74_3_a4 ER -