@article{PDMA_2015_8_a9,
     author = {A. S. Ivachev},
     title = {Research of the group of bijective differentiable modulo $p^n$ functions},
     journal = {Prikladnaya Diskretnaya Matematika. Supplement},
     pages = {27--30},
     publisher = {mathdoc},
     number = {8},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDMA_2015_8_a9/}
}