Grigory M. Sklyar, Svetlana Yu. Ignatovich. Fliess series, a generalization of the Ree's theorem, and an algebraic approach to a homogeneous approximation problem. Int. J. Control, 81(3):371-380, 2008. [doi]
@article{SklyarI08,
title = {Fliess series, a generalization of the Ree's theorem, and an algebraic approach to a homogeneous approximation problem},
author = {Grigory M. Sklyar and Svetlana Yu. Ignatovich},
year = {2008},
doi = {10.1080/00207170701561427},
url = {http://dx.doi.org/10.1080/00207170701561427},
researchr = {https://researchr.org/publication/SklyarI08},
cites = {0},
citedby = {0},
journal = {Int. J. Control},
volume = {81},
number = {3},
pages = {371-380},
}