@article{MZM_2015_97_1_a14,
     author = {P. V. Bibikov},
     title = {Differential {Invariants} and {Problems} of {Contact} and {Point} {Equivalence} of {Functions} on $n${-Jet} {Spaces} $J^n\mathbb R$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {150--153},
     publisher = {mathdoc},
     volume = {97},
     number = {1},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2015_97_1_a14/}
}