@article{FAA_2005_39_2_a8,
     author = {V. N. Pyvovarchyk},
     title = {Ambarzumian's {Theorem} for a {Sturm--Liouville} {Boundary} {Value} {Problem} on a {Star-Shaped} {Graph}},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {78--81},
     publisher = {mathdoc},
     volume = {39},
     number = {2},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_2005_39_2_a8/}
}