TY - JOUR AU - G. A. Aigunov TI - On the boundedness problem for the set of orthonormal eigenfunctions for a~class of Sturm--Liouville operators with a~weight function of unbounded variation on a~finite interval JO - Matematičeskie zametki PY - 1996 SP - 434 EP - 437 VL - 60 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1996_60_3_a10/ LA - ru ID - MZM_1996_60_3_a10 ER -