@article{MZM_2022_111_6_a13,
     author = {R. Ch. Kulaev and A. A. Urtaeva},
     title = {Sturm {Separation} {Theorems} for a {Fourth-Order} {Equation} on a {Graph}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {947--952},
     publisher = {mathdoc},
     volume = {111},
     number = {6},
     year = {2022},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2022_111_6_a13/}
}