TY - JOUR AU - Yu. Knezhevich-Milyanovich TI - An Estimate of the First Eigenvalue in a Many-Point Boundary Value Problem JO - Differencialʹnye uravneniâ PY - 2003 SP - 1708 EP - 1711 VL - 39 IS - 12 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_2003_39_12_a15/ LA - ru ID - DE_2003_39_12_a15 ER -