- Harnack inequality and Liouville-type theorems for Ornstein--Uhlenbeck and Kolmogorov operators (with E.Lanconelli and E. Priola), arXiv: 2002.04718, preprint (2020).
- On the Dirichłet problem in cylindrical domains for evolution Oleînik-Radkeviĉ PDE's: a Tikhonov-type theorem, J. Differential Equations 268 (2019), no.1, 186-203.
- A Zaremba-type criterion for hypoelliptic degenerate Ornstein-Uhlenbeck operators, Discrete Contin. Dyn. Syst. Ser. S, doi:10.3934/dcdss.2020112.
- Linear and semilinear problems involving $\Delta_\lambda$-Laplacians (with E.Lanconelli), Electron. J. Differential Equations 25 (2018), 167-178.
- A Wiener-Landis criterion for Kolmogorov-type operators (with E.Lanconelli and G.Tralli), Discrete Contin. Dyn. Syst. Ser. A, 38 (2018), no.5, 2467-2485.
- On the Dirichlet problem for evolution equations : Perron-Wiener solution and a cone-type criterion, J. Differential Equations 262 (2017), no.3, 1524-1539.
- Harnack inequality for hypoelliptic second order Partial Differential Operators (with S.Polidoro), Potential Anal. 45 (2016), no.3, 545-555.
- On Liouville-type theorems and the uniqueness of the positive Cauchy problem for a class of hypoelliptic operators (with Y. Pinchover and S.Polidoro), J. Evol. Equ. 16 (2016), no.4, 905-943.
- Weighted ${L^p}$-Liouville Theorems for Hypoelliptic Partial Differential Operators on Lie Groups (with A.Bonfiglioli), J. Evol. Equ. 16 (2016), no.3, 569-585.
- Hardy type inequalities for $\Delta_\lambda$-Laplacians (with S.Sonner), Complex Var. Elliptic Equ. 61 (2016), no. 3, 422-442.
- ${L^p}$-Liouville Theorems for Invariant Partial Differential Operators in ${\mathbb{R}^n}$ (with E.Lanconelli), Nonlinear Anal. 121 (2015), no.11, 188-205.
- A Liouville-type Theorem on halfspaces for sub-Laplacians, Proc. Amer. Math. Soc. 143(1) (2015), 239-248.
- Attractors met $X$-elliptic operators (with S.Sonner), J. Math. Anal. Appl., 420 (2014), 407-434.
- An inverse mean value property for evolution equations (with E.Lanconelli and G.Tralli), Adv. Differential Equations, Vol. 19, Numbers 7-8 (2014), 783-804.
- Attractors for a class of semi-linear degenerate parabolic equations (with S.Sonner), J. Evol. Equ. 13 (2013), no.3, 675-691.
- Blaschke, Privaloff, Reade and Saks Theorems for diffusion equations on Lie groups (with G.Tralli), Potential Anal. 38 (2013), no. 4, 1103-1122.
- On semilinear $\Delta_\lambda$-Laplace equation (with E.Lanconelli), Nonlinear Anal. 75 (2012), no.12, 4637-4649.
- A control condition for a weak Harnack inequality, Nonlinear Anal. 75 (2012), no.11, 4198-4204.
- Liouville Theorem for X -elliptic operators (with E.Lanconelli), Nonlinear Anal. 70 (2009), no.8, 2974-2985.
- Liouville Theorems for a class of linear second order operators with nonnegative characteristic form (with E.Lanconelli), Bound. Value Probl. 2007, Art. ID 48232, 16 pp.
- Link of groups and Hörmander operators (with E.Lanconelli), Proc. Amer. Math. Soc. 135 (2007), 2019-2030.
- Liouville Theorems in halfspaces for parabolic hypoelliptic equations (with E.Lanconelli), Ric. Mat. 55 (2006), no.2, 267-282.
- One-side Liouville Theorems for a class of hypoelliptic ultraparabolic equations (with E.Lanconelli), Contemp. Math., 368 (2005), 305-312, Amer. Math. Soc., Providence, RI, 2005.
- An invariant Harnack inequality for a class of hypoelliptic ultraparabolic equations (with E.Lanconelli), Mediterr. J. Math. 1 (2004), no.1, 51-80.
- X-elliptic operators and X-control distances (with E.Lanconelli), Contributions in honor of the memory of Ennio De Giorgi, Ricerche Mat. 49 (2000), suppl., 223-243.