%0 Journal Article %A N. P. Kosar %A O. Akcay %T The spectrum and principal functions of a nonself-adjoint Sturm--Liouville operator with discontinuity conditions %J Eurasian mathematical journal %D 2024 %P 55-67 %V 15 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/EMJ_2024_15_3_a5/ %G en %F EMJ_2024_15_3_a5