MR 1472545 | Zbl 0893.53013 | 6 citations in Numdam

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[Ag1] A. A. Agrachev - Any smooth simple H1-local length minimizer in the Carnot-Caratheodory space is a C0-local length minimizer, preprint, Dijon, juin 1996.

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[B-G-G3] R. Beals, B. Gaveau et P. Greiner - On a geometric formula for the fundamental solution of subelliptic laplacians, preprint (1995). | MR 1409074 | Zbl 0864.35005

[B-G-G4] R. Beals, B. Gaveau et P. Greiner - Complex Hamiltonian mechanisms and parametrics for subelliptic laplacians, preprint (1995). | MR 1431098 | Zbl 0886.35003

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[B-H] R. Bryant et L. Hsu - Rigidity of integral curves of rank 2 distributions, Invent. Math. 114 (1993), 435-461. | Article | MR 1240644 | Zbl 0807.58007

[B-Z] Yu. D. Burago et V. A. Zagaller - Geometric inequalities, Springer GdMW Bd 285 (1988). | MR 936419 | Zbl 0633.53002

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[E-G-K] El-Houcine, J.-P. Gauthier et I. Kupka - Small sub-riemannian balls in R3, Journal of Dynamical and Control Systems, vol. 2, n° 3, July 1996, 359-421. | Article | MR 1403263 | Zbl 0941.53024

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[Gr2] M. Gromov - Partial differential relations, Springer Ergebnisse der Mathematik und ihrer Grenzgebiete 3, Folge, Band 9 (1986). | MR 864505 | Zbl 0651.53001

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[J-S2] D. Jerison et A. Sanchez-Calle - Estimates for the heat kernel for the sum of squares of vector fields, Indiana Univ. Math. Journ. 35 (1986), 835-854. | Article | MR 865430 | Zbl 0639.58026

[Le1] R. Léandre - Volumes des boules sous-riemanniennes et explosion du noyau de la chaleur au sens de Stein, Séminaire de Probabilité XXIII, J. Azéma, J. Yor eds, Springer LNM 1372 (1990), 426-448. | Article | Numdam | MR 1022930 | Zbl 0764.60053

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[R] M. Rumin - Un complexe de formes différentielles sur les variétés de contact, C.R.A.S. t. 310 (1990), 401-404. | MR 1046521 | Zbl 0694.57010

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