TY - JOUR AU - N. N. Nefedov TI - Contrast structures of spike type in nonlinear singularly JO - Doklady Akademii Nauk PY - 1992 SP - 16 EP - 19 VL - 327 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1992_327_1_a1/ LA - ru ID - DAN_1992_327_1_a1 ER -