1. Adams, R., Fournier, J.: Sobolev Spaces. Academic, London (2003)
2. Antunes, P., Gazzola, F.: Some solutions of minimaxmax problems for the torsional displacements of rectangular plates. Z. Angew. Math. Mech. 98, 1974–1991 (2018)
3. Berchio, E., Falocchi, A.: Maximizing the ratio of eigenvalues of non-homogeneous partially hinged plates. J. Spectral Theory (to appear). arxiv: 1907.11097
4. Berchio, E., Ferrero, A., Gazzola, F.: Structural instability of nonlinear plates modelling suspension bridges: mathematical answers to some long-standing questions. Nonlinear Anal. Real World Appl. 28, 91–125 (2016)
5. Berchio, E., Buoso, D., Gazzola, F.: A measure of the torsional performances of partially hinged rectangular plates. In: Constanda, C., Dalla Riva, M., Lamberti, P.D., Musolino, P. (eds.) Integral Methods in Science and Engineering, vol. 1, Theoretical Techniques, pp. 35–46. Birkhäuser, Basel (2017)