@article{SVFU_2022_29_1_a4,
     author = {I. V. Rakhmelevich},
     title = {Multi-dimensional second-order differentialequations with quadratic form on the first derivatives},
     journal = {Matemati\v{c}eskie zametki SVFU},
     pages = {56--68},
     year = {2022},
     volume = {29},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SVFU_2022_29_1_a4/}
}