B. Brandolini, M. Cicalese, C. Nitsch, C. Trombetti: A sharp estimate of the extinction time for the mean-curvature flow Appl. Math. Lett. Vol. 20, N. 5, p. 551-557, 2007 L. Esposito, V. Ferone, B. Kawohl, C. Nitsch, C. Trombetti: The Longest Shortest Fence and Sharp Poincare-Sobolev Inequalities (Preprint) 2010 L. Esposito, V. Ferone, B. Kawohl, C. Nitsch, C. Trombetti: The Longest Shortest Fence and Sharp Poincare-Sobolev Inequalities (Preprint) 2010 L. Brasco, C. Nitsch, A. Pratelli: On the boundary of the attainable set of the Dirichlet spectrum Z. Angew. Math. Phys. N. 64, p. 591-597, 2012 L. Brasco, C. Nitsch, C. Trombetti: An inequality à la Szego-Weinberger for the $p-$Laplacian on convex sets Commun. Contemp. Math. (Accepted Paper) p. 22, 2015 D. Bucur, G. Buttazzo, C. Nitsch: Two optimization problems in thermal insulation Notices Amer. Math. Soc. Vol. 64, N. 8, p. 830-835, 2017 D. Bucur, V. Ferone, C. Nitsch, C. Trombetti: Weinstock inequality in higher dimensions (Submitted Paper) 2017 G. Floridia, C. Nitsch, C. Trombetti: Multiplicative controllability for nonlinear degenerate parabolic equations between sign-changing states (preprint) 2017 D. Bucur, G. Buttazzo, C. Nitsch: Symmetry breaking for a problem in optimal insulation Journal de Mathématiques Pures et Appliquées (Accepted Paper) 2017 D. Bucur, M. Nahon, C. Nitsch, C. Trombetti: Shape optimization of a thermal insulation problem (preprint) 2021