S.M. Buckley and P. Koskela, Sobolev-Poincaré inequalities for p < 1, Indiana Univ. Math. J. 43 (1994), no. 1, 221–240. http://dx.doi.org/10.1512/iumj.1994.43.43011....
L. Capogna, D. Danielli, and N. Garofalo, An isoperimetric inequality and the geometric Sobolev embedding for vector fields, Math. Res. Lett....
L. Capogna, D. Danielli, and N. Garofalo, Subelliptic mollifiers and a basic pointwise estimate of Poincaré type, Math. Z. 226 (1997), no....
M.J. Carro, C. Pérez, F. Soria, and J. Soria, Maximal functions and the control of weighted inequalities for the fractional integral operator,...
M. Christ, A T(b) theorem with remarks on analytic capacity and the Cauchy integral, Colloq. Math. 60/61 (1990), no. 2, 601–628. MR1096400...
R.R. Coifman and G. Weiss, Analyse Harmonique Non-commutative sur Certains Espaces Homogènes. Étude de Certaines Intégrales Singulières, Lecture...
D. Danielli, N. Garofalo, and N.C. Phuc, Inequalities of Hardy-Sobolev type in Carnot-Carathéodory spaces, Sobolev Spaces in Mathematics,...
D. Danielli, N. Garofalo, and N.C. Phuc, Sharp Hardy-Sobolev type inequalities in Carnot-Carathéodory spaces, preprint.
B. Franchi, C.E. Gutiérrez, and R.L. Wheeden, Weighted Sobolev-Poincaré inequalities for Grushin type operators, Comm. Partial Differential...
B. Franchi, G. Lu, and R.L. Wheeden, Representation formulas and weighted Poincaré inequalities for Hörmander vector fields, Ann. Inst. Fourier...
B. Franchi, G. Lu, and R.L. Wheeden, Weighted Poincaré inequalities for Hörmander vector fields and local regularity for a class of degenerate...
B. Franchi, G. Lu, and R.L. Wheeden, A relationship between Poincaré-type inequalities and representation formulas in spaces of homogeneous...
B. Franchi and R.L. Wheeden, Some remarks about Poincaré type inequalities and representation formulas in metric spaces of homogeneous type,...
N. Garofalo and D.-M. Nhieu, Isoperimetric and Sobolev inequalities for Carnot-Carathéodory spaces and the existence of minimal surfaces,...
P. Hajłasz and P. Koskela, Sobolev met Poincaré, Mem. Amer. Math. Soc. 145 (2000), no. 688, x+101. MR1683160 (2000j:46063)
D. Jerison, The Poincaré inequality for vector fields satisfying Hörmander’s condition, Duke Math. J. 53 (1986), no. 2, 503–523. http://dx.doi.org/10.1215/S0012-7094-86-05329-9....
G. Lu and R.L. Wheeden, Higher order representation formulas and embedding theorems on stratified groups and generalizations, Studia Math....
R.A. Macías and C. Segovia, Lipschitz functions on spaces of homogeneous type, Adv. in Math. 33 (1979), no. 3, 257–270. http://dx.doi.org/10.1016/0001-8708(79)90012-4....
P. Maheux and L. Saloff-Coste, Analyse sur les boules d’un opérateur sous-elliptique, Math. Ann. 303 (1995), no. 4, 713–740 (French). http://dx.doi.org/10.1007/BF01461013....
B. Muckenhoupt and R.L. Wheeden, Weighted norm inequalities for fractional integrals, Trans. Amer. Math. Soc. 192 (1974), 261–274. MR0340523...
A. Nagel, E.M. Stein, and S. Wainger, Balls and metrics defined by vector fields. I. Basic properties, Acta Math. 155 (1985), no. 1-2, 103–147....
C. Pérez, On sufficient conditions for the boundedness of the Hardy-Littlewood maximal operator between weighted Lp-spaces with different...
C. Pérez, Sharp Lp-weighted Sobolev inequalities, Ann. Inst. Fourier (Grenoble) 45 (1995), no. 3, 809–824 (English, with English and French...
C. Pérez and R.L. Wheeden, Uncertainty principle estimates for vector fields, J. Funct. Anal. 181 (2001), no. 1, 146–188. http://dx.doi.org/10.1006/jfan.2000.3711....
G. Pradolini, Weighted inequalities and pointwise estimates for the multilinear fractional integral and maximal operators, J. Math. Anal....