TY - JOUR AU - L. M. Berkovich TI - Factorization as a method for finding exact invariant solutions of the Kolmogorov--Petrovskii--Piskunov equation and related equations of Semenov and Zel'dovich JO - Doklady Akademii Nauk PY - 1992 SP - 823 EP - 827 VL - 322 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1992_322_5_a0/ LA - ru ID - DAN_1992_322_5_a0 ER -