@article{IM2_2022_86_6_a1,
     author = {O. Yu. Aristov},
     title = {Functions of class $C^\infty$ in non-commuting variables},
     journal = {Izvestiya. Mathematics},
     pages = {1033--1071},
     year = {2022},
     volume = {86},
     number = {6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2022_86_6_a1/}
}