@article{NANO_2022_13_3_a1,
     author = {Irina V. Blinova and Anton I. Popov and Anna A. Bosova},
     title = {Spectral gaps for star-like quantum graph and for two coupled rings},
     journal = {Nanosistemy: fizika, himi\^a, matematika},
     pages = {245--249},
     publisher = {mathdoc},
     volume = {13},
     number = {3},
     year = {2022},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NANO_2022_13_3_a1/}
}