1. Ané, C., Blachère, S., Chafaï, D., Fougères, P., Gentil, I., Malrieu, F., Roberto, C., Scheffer, G.: Sur les inégalités de Sobolev logarithmiques. Panoramas et Synthèses, vol. 10, p. xvi+217. Société Mathématique de France, Paris (2000)
2. Bakry D., Emery M.: Diffusions hypercontractives. Sémin. Prob. Strasbourg 19, 177–206 (1985)
3. Bakry, D.: L’hypercontractivité et son utilisation en théorie des semigroupes. Lectures on probability theory (Saint-Flour, 1992), pp. 1–114. Lecture Notes in Math., vol. 1581. Springer, Berlin (1994)
4. Bakry, D.: Functional inequalities for Markov semigroups. Probability measures on groups: recent directions and trends, pp. 91–147, Tata Inst. Fund. Res., Mumbai (2006)
5. Bakry, D., Baudoin, F., Bonnefont, M., Chafai, D.: On gradient bounds for the heat kernel on the Heisenberg group. Arxiv preprint 0710.3139. J. Funct. Anal. (2007) (to appear)