@article{FPM_1999_5_3_a8,
     author = {U. T. Borisenok and M. V. Shamolin},
     title = {Resolving a~problem of differential diagnostics},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {775--790},
     publisher = {mathdoc},
     volume = {5},
     number = {3},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_1999_5_3_a8/}
}