TY - JOUR AU - E. A. Kalita TI - Singular solutions of higher-order non-linear elliptic systems JO - Sbornik. Mathematics PY - 2004 SP - 1607 EP - 1638 VL - 195 IS - 11 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_2004_195_11_a3/ LA - en ID - SM_2004_195_11_a3 ER -