@article{VMP_2016_17_3_a1,
     author = {N. F. Valeev and Yu. V. Martynova and Ya. T. Sultanaev},
     title = {Solution of a model inverse spectral problem for the {Sturm--Liouville} operator on a graph},
     journal = {Numerical methods and programming},
     pages = {204--211},
     publisher = {mathdoc},
     volume = {17},
     number = {3},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMP_2016_17_3_a1/}
}