@article{ISU_2014_14_1_a6,
     author = {V. A. Yurko},
     title = {On an inverse problem for differential operators on hedgehog-type graphs},
     journal = {Izvestiya of Saratov University. Mathematics. Mechanics. Informatics},
     pages = {65--72},
     publisher = {mathdoc},
     volume = {14},
     number = {1},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ISU_2014_14_1_a6/}
}