Bibliographie
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,[2] The Geometry of Geodesics, Academic Press, New York, 1955. MR 75623 | Zbl 0112.37002
,[3] Analyse Harmonique Non-Commutative sur Certains Espaces Homogènes, Springer, Berlin - Heidelberg - New York, 1971. MR 499948 | Zbl 0224.43006
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,[6] The Local Regularity of Solutions of Degenerate Elliptic Equations, Comm. Partial Differential Equations 7 (1) (1982), pp. 77-116. MR 643158 | Zbl 0498.35042
- - ,[7] Subelliptic Eigenvalue Problems, Preprint 1981. MR 730094
- ,[8] De Giorgi's Theorem for a Class of Strongly Degenerate Elliptic Equations, Atti Accad. Naz. Lincei Rend. Cl. Sci. Fis. Mat. Natur., 72 (8) (1982), pp. 273-277. MR 728257 | Zbl 0543.35041
- ,[9] Une métrique associée à une classe d'opérateurs elliptiques dégénérés, Proceedings of the meeting «Linear Partial and Pseudo Differential Operators », Torino (1982), Rend. Sem. Mat. Univ. e Politec. Torino, to appear. MR 728257 | Zbl 0553.35033
- ,[10] An Embedding Theorem for Sobolev Spaces Related to Non-Smooth Vector Fields and Harnack Inequality, to appear. Zbl 0589.46023
- ,[11] Elliptic Partial Differential Equations of Second Order, Springer, Berlin - Heidelberg - New York, 1977. MR 473443 | Zbl 0361.35003
- ,[12] Hypoelliptic Second-Order Differential Equations, Acta Math. 119 (1967), pp. 147-171. MR 222474 | Zbl 0156.10701
,[13] Qualitative Properties of the Generalized Solutions of Degenerate Elliptic Equations, Ukrain. Math. Z., 27 (1975), pp. 320-328 = Ukrainian Math. J., 27 (1975), pp. 256-263. MR 412576 | Zbl 0337.35009
,[14] Certain Properties of Solutions to Elliptic Equations, Dokl. Akad. Nauk SSSR, 150 (1963), pp. 470-473 = Soviet Math. Dokl., 4 (1963), pp. 686-690. MR 150442 | Zbl 0148.35701
,[15] A New Proof of De Giorgi's Theorem Concerning the Regularity Probem for Elliptic Differential Equations, Comm. Pure Appl. Math., 13 (1960), pp. 457-468. MR 170091 | Zbl 0111.09301
,[16] Boundary Value Problems for Some Degenerate-Elliptic Operators, Ann. Mat. Pura Appl., 80 (4) (1968), pp. 1-122. MR 249828 | Zbl 0185.19201
- ,[17] Continuity of Solutions of Parabolic and Elliptic Equations, Amer. J. Math., 80 (1958), pp. 931-954. MR 100158 | Zbl 0096.06902
,[18] Linear Elliptic Operators with Measurable Coefficients, Ann. Scuola Norm. Sup. Pisa, (3) 27 (1973), pp. 265-308. Numdam | MR 369884 | Zbl 0279.35025
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