@Article{ LaMePaRh11, author = { Laidoune, Karima and Metafune, Giorgio and Pallara, Diego and Rhandi, Abdelaziz }, title = { Global properties of transition kernels associated with second order elliptic operators }, journal = { Parabolic Problems: the Herbert Amann Festschrift, Progress in nonlinear differential equations and their applications }, year = { 2011 }, volume = { 60 }, pages = { 615-632. }, URL = { http://cvgmt.sns.it/paper/2486/ }, note = { cvgmt preprint} }