TY - JOUR AU - Ī. Ī. Lazurchak TI - A Two-Sided Method for the First Boundary Value Problem for Singular Ordinary Differential Equations JO - Differencialʹnye uravneniâ PY - 2001 SP - 547 EP - 557 VL - 37 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_2001_37_4_a13/ LA - ru ID - DE_2001_37_4_a13 ER -