TY - JOUR AU - S. A. Shabrov TI - On a~necessary condition of at least one quadratic functional with an integral Stieltjes JO - Izvestiya of Saratov University. Mathematics. Mechanics. Informatics PY - 2012 SP - 52 EP - 55 VL - 12 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ISU_2012_12_1_a7/ LA - ru ID - ISU_2012_12_1_a7 ER -