TY - JOUR AU - È. I. Grigolyuk AU - L. A. Fil'shtinskii TI - Equivalent rigidity of biperiodic lattice strengthened by elastic rings JO - Doklady Akademii Nauk PY - 1969 SP - 1254 EP - 1256 VL - 187 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1969_187_6_a11/ LA - ru ID - DAN_1969_187_6_a11 ER -