TY - JOUR AU - K. S. Matviichuk TI - Reduced density matrices with nonzero boundary conditions in the case of a~hard core JO - Teoretičeskaâ i matematičeskaâ fizika PY - 1974 SP - 410 EP - 426 VL - 18 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TMF_1974_18_3_a12/ LA - ru ID - TMF_1974_18_3_a12 ER -