- A. I. Tret'yak, “Higher-order pointwise optimality conditions”, J Math Sci, 71, no. 3, 1994, 2486
![https://doi.org/10.1007/BF02111559 crossref](/refsvg/svg/crossref.svg)
- G. M. Sklyar, S. Y. Ignatovich, “Fliess series, a generalization of the Ree's theorem, and an algebraic approach to a homogeneous approximation problem”, International Journal of Control, 81, no. 3, 2008, 371
![https://doi.org/10.1080/00207170701561427 crossref](/refsvg/svg/crossref.svg)
- Mauro Garavello, Benedetto Piccoli, “Hybrid Necessary Principle”, SIAM J. Control Optim., 43, no. 5, 2005, 1867
![https://doi.org/10.1137/S0363012903416219 crossref](/refsvg/svg/crossref.svg)
- A. Marigo, “Classification of Carnot Algebras: the Semi-Rigid Cases”, J Dyn Control Syst, 13, no. 1, 2007, 95
![https://doi.org/10.1007/s10883-006-9005-1 crossref](/refsvg/svg/crossref.svg)
- Woocheol Choi, Raphaël Ponge, “Privileged Coordinates and Nilpotent Approximation for Carnot Manifolds, II. Carnot Coordinates”, J Dyn Control Syst, 25, no. 4, 2019, 631
![https://doi.org/10.1007/s10883-019-09434-9 crossref](/refsvg/svg/crossref.svg)
- Eugénio M. Rocha, 281, Nonlinear and Adaptive Control, 2003, 317
![https://doi.org/10.1007/3-540-45802-6_25 crossref](/refsvg/svg/crossref.svg)
- A. A. Agrachev, “Any sub-Riemannian metric has points of smoothness”, Dokl. Math., 79, no. 1, 2009, 45
![https://doi.org/10.1134/S106456240901013X crossref](/refsvg/svg/crossref.svg)
- S. A. Vakhrameev, “Morse theory and Lyusternik-Shnirelman theory in geometric control theory”, J Math Sci, 71, no. 3, 1994, 2434
![https://doi.org/10.1007/BF02111558 crossref](/refsvg/svg/crossref.svg)
- F. Monroy-Pérez, A. Anzaldo-Meneses, “The Step-2 Nilpotent (n, n(n + 1)/2) Sub-Riemannian Geometry”, J Dyn Control Syst, 12, no. 2, 2006, 185
![https://doi.org/10.1007/s10450-006-0380-4 crossref](/refsvg/svg/crossref.svg)
- Salvatore Monaco, DorothÉe Normand-Cyrot, Claudia Califano, “From Chronological Calculus to Exponential Representations of Continuous and Discrete-Time Dynamics: A Lie-Algebraic Approach”, IEEE Trans. Automat. Contr., 52, no. 12, 2007, 2227
![https://doi.org/10.1109/TAC.2007.902734 crossref](/refsvg/svg/crossref.svg)