@article{MZM_2021_110_3_a2,
     author = {F. E. Lomovtsev and K. A. Spesivtseva},
     title = {Mixed {Problem} for a {General} {1D} {Wave} {Equation} with {Characteristic} {Second} {Derivatives} in a {Nonstationary} {Boundary} {Mode}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {345--357},
     publisher = {mathdoc},
     volume = {110},
     number = {3},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2021_110_3_a2/}
}