@article{MZM_1981_29_5_a3,
     author = {V. P. Viflyantsev},
     title = {Local structure of a completely integrable differential system with singularities},
     journal = {Matemati\v{c}eskie zametki},
     pages = {685--690},
     publisher = {mathdoc},
     volume = {29},
     number = {5},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1981_29_5_a3/}
}