@article{TM_2020_308_a19,
     author = {A. V. Tsvetkova and A. I. Shafarevich},
     title = {Localized {Asymptotic} {Solution} of a {Variable-Velocity} {Wave} {Equation} on the {Simplest} {Decorated} {Graph}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {265--275},
     publisher = {mathdoc},
     volume = {308},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_2020_308_a19/}
}