@article{VTAMU_2021_26_136_a1,
     author = {A. V. Arutyunov and E. A. Pluzhnikova},
     title = {On the {Cauchy} problem for implicit differential equations of higher orders},
     journal = {Vestnik rossijskih universitetov. Matematika},
     pages = {348--362},
     publisher = {mathdoc},
     volume = {26},
     number = {136},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTAMU_2021_26_136_a1/}
}