TY - JOUR AU - S. G. Kondratenya TI - The behavior of the solution of systems of two differential equations in the neighborhood of an essential singularity JO - Differencialʹnye uravneniâ PY - 1971 SP - 747 EP - 749 VL - 7 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1971_7_4_a14/ LA - ru ID - DE_1971_7_4_a14 ER -