@article{VMUMM_2020_2_a9,
     author = {I. A. Proskurnin},
     title = {Normal forms of equivariant functions},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {51--55},
     publisher = {mathdoc},
     number = {2},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2020_2_a9/}
}