TY - JOUR AU - M. R. Fel'dman TI - Stability of orthotropic plates with stepwise variable stiffness JO - Doklady Akademii Nauk PY - 1961 SP - 1086 EP - 1089 VL - 137 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1961_137_5_a21/ LA - ru ID - DAN_1961_137_5_a21 ER -