@article{SJIM_2004_7_4_a1,
     author = {A. N. Bondarenko and V. A. Dedok},
     title = {Spectral surgery of quantum graphs},
     journal = {Sibirskij \v{z}urnal industrialʹnoj matematiki},
     pages = {16--28},
     publisher = {mathdoc},
     volume = {7},
     number = {4},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJIM_2004_7_4_a1/}
}