TY - JOUR AU - I. M. Karabash AU - A. S. Kostenko TI - On the Similarity of a $J$-Nonnegative Sturm--Liouville Operator to a Self-Adjoint Operator JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 2009 SP - 81 EP - 84 VL - 43 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_2009_43_1_a5/ LA - ru ID - FAA_2009_43_1_a5 ER -