@article{SM_2008_199_10_a5,
     author = {V. V. Provotorov},
     title = {Eigenfunctions of the {Sturm-Liouville} problem on a~star graph},
     journal = {Sbornik. Mathematics},
     pages = {1523--1545},
     publisher = {mathdoc},
     volume = {199},
     number = {10},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2008_199_10_a5/}
}