TY - JOUR AU - Boris P. Ilyin AU - Vladimir I. Panteleev TI - Lattice of E-closed classes of multifunctions of rank 2 JO - The Bulletin of Irkutsk State University. Series Mathematics PY - 2024 SP - 111 EP - 128 VL - 48 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IIGUM_2024_48_a7/ LA - ru ID - IIGUM_2024_48_a7 ER -