TY - JOUR AU - A. Sergyeyev TI - On the classification of conditionally integrable evolution systems in $(1+1)$ dimensions JO - Fundamentalʹnaâ i prikladnaâ matematika PY - 2004 SP - 243 EP - 253 VL - 10 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FPM_2004_10_1_a11/ LA - ru ID - FPM_2004_10_1_a11 ER -