TY - JOUR AU - A. V. Kazeykina TI - Absence of Conductivity-Type Solitons for the Novikov--Veselov Equation at Zero Energy JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 2013 SP - 79 EP - 82 VL - 47 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_2013_47_1_a7/ LA - ru ID - FAA_2013_47_1_a7 ER -