TY - JOUR AU - V. V. Dubrovskii AU - A. I. Sedov TI - Estimation of the~difference of spectral functions of the~Legendre-type operators JO - Fundamentalʹnaâ i prikladnaâ matematika PY - 2000 SP - 1075 EP - 1082 VL - 6 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FPM_2000_6_4_a7/ LA - ru ID - FPM_2000_6_4_a7 ER -