@article{PDMA_2014_7_a6,
     author = {A. S. Ivachev},
     title = {Research of differentiable modulo $p^n$ functions},
     journal = {Prikladnaya Diskretnaya Matematika. Supplement},
     pages = {19--22},
     publisher = {mathdoc},
     number = {7},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDMA_2014_7_a6/}
}