@article{VTAMU_2021_26_136_a6,
     author = {W. Merchela},
     title = {One method for investigating the solvability of boundary value problems for an implicit differential equation},
     journal = {Vestnik rossijskih universitetov. Matematika},
     pages = {404--413},
     publisher = {mathdoc},
     volume = {26},
     number = {136},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTAMU_2021_26_136_a6/}
}