B. Franchi, R. Serapioni, F. Serra Cassano: Rectifiability and Perimeter in the Heisenberg Group Math.Ann. Vol. 321, p. 479-531, 2001 R. Monti, F. Serra Cassano: Surface measures in Carnot- Caratheodory spaces Calc. Var. Partial Differential Equations Vol. 13, p. 339-376, 2001 B. Franchi, R. Serapioni, F. Serra Cassano: Rectifiability and perimeter in step 2 groups Mathematica Bohemica Vol. 127, N. 2, p. 219-228, 2002 B. Franchi, R. Serapioni, F. Serra Cassano: Regular hypersurfaces, Intrinsic perimeter and implicit function theorem in Carnot groups Comm. Analysis and Geometry (Accepted Paper) 2002 R. Monti, F. Serra Cassano: Degenerate perturbations of a two-phase transition model J. Convex Anal. Vol. 10, N. 1, p. 1-34, 2003 Z. Balogh, M. Rickly, F. Serra Cassano: Comparison of Hausdorff measures with respect to the Euclidean and the Heisenberg metric Publ. Mat. Vol. 47, N. 1, p. 237-259, 2003 B. Franchi, R. Serapioni, F. Serra Cassano: On the structure of finite perimeter sets in step 2 Carnot groups J.Geom.Anal. Vol. 13, N. 3, p. 421-466, 2003 B. Kirchheim, F. Serra Cassano: Rectifiability and parametrization of intrinsic regular surfaces in the Heisenberg group Ann. Scuola Norm.Sup. Pisa Cl.Sci. (5) Vol. III, p. 871-896, 2004 B. Franchi, R. Serapioni, F. Serra Cassano: Regular submanifolds, graphs and area formula in Heisenberg groups Advances in Mathematics (Accepted Paper) 2004 B. Franchi, R. Serapioni, F. Serra Cassano: Intrinsic submanifolds, graphs and currents in Heisenberg groups Lectures Notes of Seminario Interdisciplinare di Matematica Vol. 4, p. 23-38, 2005 B. Franchi, R. Serapioni, F. Serra Cassano: Intrinsic Lipshitz graphs in Heisenebrg groups J. Nonlinear and Convex Analysis (Accepted Paper) 2006 L. Ambrosio, F. Serra Cassano, D. Vittone: Intrinsic regular hypersurfaces in Heisenberg groups J. Geom. Anal. Vol. 16, N. 2, p. 187-232, 2006 V. Barone Adesi, F. Serra Cassano, D. Vittone: The Bernstein problem for intrinsic graphs in Heisenberg groups and calibrations Calc. Var. & PDEs Vol. 30, N. 1, p. 17-49, 2007 B. Franchi, R. Serapioni, F. Serra Cassano: Differentiability of intrinsic Lipschitz functions within Heisenberg groups (Submitted Paper) 2008 R. Monti, F. Serra Cassano, D. Vittone: A negative answer to the Bernstein problem for intrinsic graphs in the Heisenberg group Boll. Unione Mat. Ital. (9) Vol. 1, N. 3, p. 709-727, 2008 F. Bigolin, F. Serra Cassano: Intrinsic regular graphs in Heisenberg groups vs. weak solutions of non linear first-order PDEs Adv. Calc. Var. (Accepted Paper) 2009 F. Bigolin, F. Serra Cassano: Distributional solutions of Burgers' equation and intrinsic regular graphs in Heisenberg groups JMAA (Accepted Paper) p. 11, 2009 F. Bigolin, L. Caravenna, F. Serra Cassano: INTRINSIC LIPSCHITZ GRAPHS IN HEISENBERG GROUPS AND CONTINUOUS SOLUTIONS OF BALANCE EQUATIONS (Preprint) 2012 G. Citti, M. Manfredini, A. Pinamonti, F. Serra Cassano: Smooth approximation for intrinsic Lipschitz functions in the Heisenberg group Calc. Var. Partial Differential Equations (Accepted Paper) 2013 G. Citti, M. Manfredini, A. Pinamonti, F. Serra Cassano: Poincaré-type inequality for Lipschitz continuous vector fields JMPA (Accepted Paper) 2013 F. Serra Cassano, D. Vittone: Graphs of bounded variation, existence and local boundedness of non-parametric minimal surfaces in Heisenberg groups Adv. Calc. Var. Vol. 7, N. 4, p. 409--492, 2014 A. Pinamonti, F. Serra Cassano, G. Treu, D. Vittone: BV Minimizers of the area functional in the Heisenberg group under the bounded slope condition Ann. Sc. Norm. Super. Pisa Cl. Sci. (5) Vol. 14, N. 3, p. 907--935, 2015 S. Nicolussi Golo, F. Serra Cassano: The Bernstein problem for Lipschitz intrinsic graphs in the Heisenberg group (preprint) 2018 A. Maione, A. Pinamonti, F. Serra Cassano: $\Gamma$-convergence for functionals depending on vector fields I. Integral representation and compactness. J. Math. Pures Appl. Vol. 139, p. 109-142, 2020 F. Serra Cassano, M. Vedovato: The Bernstein problem in Heisenberg groups Le Matematiche Vol. 75, N. 1, p. 377-403, 2020 L. Ambrosio, S. Nicolussi Golo, F. Serra Cassano: Classical flows of vector fields with exponential or sub-exponential summability (preprint) 2022 A. Maione, A. Pinamonti, F. Serra Cassano: -Convergence for Functionals Depending on Vector Fields. II. Convergence of Minimizers SIAM J. Math. Anal. Vol. 54, N. 6, p. 5761-5791, 2022 L. Ambrosio, S. Nicolussi Golo, F. Serra Cassano: Optimal $C^\infty$-approximation of functions with exponentially or sub-exponentially integrable derivative (preprint) 2022 V. De Cicco, F. Serra Cassano: Relaxation and optimal finiteness domain for degenerate quadratic functionals - one dimensional case ESAIM: Control, Optimisation and Calculus of Variations (Accepted Paper) 2024 A. Pinamonti, F. Serra Cassano, K. Zambanini: On some intrinsic differentiability properties for Absolutely Continuous functions between Carnot groups and the Area formula (Preprint) 2024