@article{RM_2013_68_1_a0,
     author = {I. K. Babenko},
     title = {Algebra, geometry, and topology of the~substitution group of formal power series},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {1--68},
     publisher = {mathdoc},
     volume = {68},
     number = {1},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2013_68_1_a0/}
}