@article{SJIM_2024_27_2_a8,
     author = {A. A. Urtaeva},
     title = {Upper bounds for the eigenvalue multiplicities of a fourth-order differential operator on a graph},
     journal = {Sibirskij \v{z}urnal industrialʹnoj matematiki},
     pages = {121--132},
     year = {2024},
     volume = {27},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJIM_2024_27_2_a8/}
}