TY - JOUR AU - I. A. Gorbunov TI - Lattices of sets and algebraic closure operator JO - Vestnik Tverskogo gosudarstvennogo universiteta. Seriâ Prikladnaâ matematika PY - 2017 SP - 35 EP - 42 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VTPMK_2017_4_a2/ LA - ru ID - VTPMK_2017_4_a2 ER -