TY - JOUR AU - I. S. Lomov TI - Integral Representations of a Partial Sum of a Biorthogonal Series for Higher-Order Differential Operators JO - Differencialʹnye uravneniâ PY - 2003 SP - 602 EP - 611 VL - 39 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_2003_39_5_a2/ LA - ru ID - DE_2003_39_5_a2 ER -