%0 Journal Article %A A. M. Savchuk %A I. V. Sadovnichaya %T Spectral analysis of one-dimensional Dirac system with summable potential and Sturm--Liouville operator with distribution coefficients %J Contemporary Mathematics. Fundamental Directions %D 2020 %P 373-530 %V 66 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMFD_2020_66_3_a0/ %G ru %F CMFD_2020_66_3_a0