TY - JOUR AU - D. Khadzhiev TI - Properties of operators of extension and contraction of ideals of algebras of invariants of reductive groups in positive characteristic JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1991 SP - 53 EP - 61 VL - 25 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1991_25_4_a4/ LA - ru ID - FAA_1991_25_4_a4 ER -